./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7 --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 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:13:02,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:13:02,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:13:02,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:13:02,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:13:02,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:13:02,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:13:02,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:13:02,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:13:02,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:13:02,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:13:02,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:13:02,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:13:02,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:13:02,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:13:02,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:13:02,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:13:02,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:13:02,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:13:02,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:13:02,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:13:02,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:13:02,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:13:02,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:13:02,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:13:02,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:13:02,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:13:02,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:13:02,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:13:02,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:13:02,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:13:02,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:13:02,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:13:02,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:13:02,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:13:02,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:13:02,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:13:02,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:13:02,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:13:02,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:13:02,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:13:02,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:13:02,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:13:02,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:13:02,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:13:02,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:13:02,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:13:02,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:13:02,867 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:13:02,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:13:02,868 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:13:02,868 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:13:02,869 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:13:02,869 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:13:02,870 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:13:02,870 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:13:02,870 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:13:02,871 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:13:02,877 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:13:02,877 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:13:02,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:13:02,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:13:02,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:13:02,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:13:02,880 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:13:02,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:13:02,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:13:02,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:13:02,882 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:13:02,883 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:13:02,884 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:13:02,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:13:02,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:13:02,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:13:02,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:13:02,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:13:02,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:13:02,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:02,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:13:02,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:13:02,889 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:13:02,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:13:02,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:13:02,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:13:02,890 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_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 [2021-11-25 19:13:03,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:13:03,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:13:03,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:13:03,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:13:03,228 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:13:03,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-11-25 19:13:03,293 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/a4aa57e5f/8d1bcca693d647c0b320a0e51b010b61/FLAG6c1dc9b66 [2021-11-25 19:13:03,877 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:13:03,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-11-25 19:13:03,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/a4aa57e5f/8d1bcca693d647c0b320a0e51b010b61/FLAG6c1dc9b66 [2021-11-25 19:13:04,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/a4aa57e5f/8d1bcca693d647c0b320a0e51b010b61 [2021-11-25 19:13:04,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:13:04,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:13:04,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:04,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:13:04,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:13:04,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:04" (1/1) ... [2021-11-25 19:13:04,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae79b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:04, skipping insertion in model container [2021-11-25 19:13:04,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:04" (1/1) ... [2021-11-25 19:13:04,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:13:04,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:13:04,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:04,644 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) [2021-11-25 19:13:04,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40b57c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:04, skipping insertion in model container [2021-11-25 19:13:04,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:04,645 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 19:13:04,649 INFO L158 Benchmark]: Toolchain (without parser) took 461.81ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 55.0MB in the beginning and 85.3MB in the end (delta: -30.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:13:04,650 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 90.2MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:13:04,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.29ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 54.8MB in the beginning and 85.3MB in the end (delta: -30.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:13:04,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 90.2MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.29ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 54.8MB in the beginning and 85.3MB in the end (delta: -30.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7 --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 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:13:06,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:13:06,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:13:06,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:13:06,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:13:06,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:13:06,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:13:06,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:13:06,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:13:06,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:13:06,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:13:06,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:13:06,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:13:06,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:13:06,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:13:06,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:13:06,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:13:06,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:13:06,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:13:06,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:13:06,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:13:06,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:13:06,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:13:06,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:13:06,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:13:06,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:13:06,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:13:06,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:13:06,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:13:06,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:13:06,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:13:06,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:13:06,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:13:06,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:13:06,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:13:06,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:13:06,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:13:06,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:13:06,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:13:06,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:13:06,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:13:06,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 19:13:07,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:13:07,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:13:07,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:13:07,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:13:07,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:13:07,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:13:07,051 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:13:07,051 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:13:07,051 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:13:07,051 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:13:07,052 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:13:07,052 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:13:07,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:13:07,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:13:07,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:13:07,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:13:07,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:13:07,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:13:07,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:13:07,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:13:07,056 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:13:07,056 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:13:07,056 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:13:07,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:13:07,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:13:07,057 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:13:07,057 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:13:07,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:13:07,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:13:07,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:13:07,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:13:07,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:13:07,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:07,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:13:07,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:13:07,059 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:13:07,059 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:07,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:13:07,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:13:07,060 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_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 [2021-11-25 19:13:07,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:13:07,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:13:07,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:13:07,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:13:07,427 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:13:07,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-11-25 19:13:07,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/36c2cfcff/e744947e17c84d0297a4d5d0fa24bf36/FLAGbe1554b52 [2021-11-25 19:13:08,054 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:13:08,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-11-25 19:13:08,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/36c2cfcff/e744947e17c84d0297a4d5d0fa24bf36/FLAGbe1554b52 [2021-11-25 19:13:08,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/data/36c2cfcff/e744947e17c84d0297a4d5d0fa24bf36 [2021-11-25 19:13:08,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:13:08,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:13:08,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:08,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:13:08,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:13:08,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:08,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3594bb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08, skipping insertion in model container [2021-11-25 19:13:08,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:08,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:13:08,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:13:08,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:08,797 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 19:13:08,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:13:08,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:08,891 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:13:08,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:08,976 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:13:08,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08 WrapperNode [2021-11-25 19:13:08,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:08,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:08,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:13:08,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:13:08,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,048 INFO L137 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2021-11-25 19:13:09,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:09,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:13:09,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:13:09,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:13:09,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:13:09,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:13:09,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:13:09,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:13:09,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (1/1) ... [2021-11-25 19:13:09,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:09,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:13:09,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:13:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:13:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:13:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2021-11-25 19:13:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2021-11-25 19:13:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:13:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:13:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:13:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:13:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:13:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:13:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:13:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:13:09,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:13:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:13:09,384 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:13:09,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:13:10,302 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:13:10,309 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:13:10,310 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:13:10,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:10 BoogieIcfgContainer [2021-11-25 19:13:10,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:13:10,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:13:10,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:13:10,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:13:10,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:13:08" (1/3) ... [2021-11-25 19:13:10,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248407b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:10, skipping insertion in model container [2021-11-25 19:13:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:08" (2/3) ... [2021-11-25 19:13:10,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248407b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:10, skipping insertion in model container [2021-11-25 19:13:10,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:10" (3/3) ... [2021-11-25 19:13:10,320 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-1.i [2021-11-25 19:13:10,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:13:10,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-11-25 19:13:10,371 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:13:10,378 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 [2021-11-25 19:13:10,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-11-25 19:13:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 94 states have (on average 2.148936170212766) internal successors, (202), 186 states have internal predecessors, (202), 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) [2021-11-25 19:13:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:13:10,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:10,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:13:10,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 5083689, now seen corresponding path program 1 times [2021-11-25 19:13:10,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:10,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087533261] [2021-11-25 19:13:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:10,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:10,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:10,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:10,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:13:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:13:10,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:10,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:10,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087533261] [2021-11-25 19:13:10,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087533261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:10,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:10,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:10,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285266683] [2021-11-25 19:13:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:10,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:13:10,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:13:10,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:13:10,611 INFO L87 Difference]: Start difference. First operand has 190 states, 94 states have (on average 2.148936170212766) internal successors, (202), 186 states have internal predecessors, (202), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:10,642 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2021-11-25 19:13:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:13:10,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 19:13:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:10,654 INFO L225 Difference]: With dead ends: 190 [2021-11-25 19:13:10,654 INFO L226 Difference]: Without dead ends: 188 [2021-11-25 19:13:10,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:13:10,659 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:10,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:13:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-25 19:13:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-25 19:13:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 93 states have (on average 2.096774193548387) internal successors, (195), 184 states have internal predecessors, (195), 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) [2021-11-25 19:13:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 199 transitions. [2021-11-25 19:13:10,713 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 199 transitions. Word has length 4 [2021-11-25 19:13:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:10,714 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 199 transitions. [2021-11-25 19:13:10,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 199 transitions. [2021-11-25 19:13:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:13:10,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:10,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:13:10,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:10,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:10,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:10,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 5081478, now seen corresponding path program 1 times [2021-11-25 19:13:10,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223009086] [2021-11-25 19:13:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:10,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:10,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:10,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:10,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:13:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:11,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:13:11,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:11,087 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 [2021-11-25 19:13:11,095 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 [2021-11-25 19:13:11,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:11,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:13:11,166 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:13:11,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:13:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:11,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:11,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223009086] [2021-11-25 19:13:11,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223009086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:11,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:11,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:11,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211911018] [2021-11-25 19:13:11,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:11,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:13:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:13:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:13:11,193 INFO L87 Difference]: Start difference. First operand 188 states and 199 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:11,971 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2021-11-25 19:13:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:13:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 19:13:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:11,975 INFO L225 Difference]: With dead ends: 206 [2021-11-25 19:13:11,976 INFO L226 Difference]: Without dead ends: 206 [2021-11-25 19:13:11,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:11,977 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 32 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:11,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 355 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:13:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-25 19:13:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 193. [2021-11-25 19:13:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 98 states have (on average 2.0816326530612246) internal successors, (204), 189 states have internal predecessors, (204), 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) [2021-11-25 19:13:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2021-11-25 19:13:11,997 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 4 [2021-11-25 19:13:11,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:11,998 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2021-11-25 19:13:11,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2021-11-25 19:13:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:13:11,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:11,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:13:12,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:12,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:12,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:12,210 INFO L85 PathProgramCache]: Analyzing trace with hash 5081477, now seen corresponding path program 1 times [2021-11-25 19:13:12,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:12,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866149068] [2021-11-25 19:13:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:12,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:12,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:12,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:12,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:13:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:12,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:13:12,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:12,305 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 [2021-11-25 19:13:12,338 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:13:12,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-25 19:13:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:12,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:12,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:12,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866149068] [2021-11-25 19:13:12,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866149068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:12,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:12,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:12,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108726952] [2021-11-25 19:13:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:12,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:13:12,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:13:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:13:12,368 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:12,711 INFO L93 Difference]: Finished difference Result 188 states and 202 transitions. [2021-11-25 19:13:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:13:12,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 19:13:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:12,713 INFO L225 Difference]: With dead ends: 188 [2021-11-25 19:13:12,713 INFO L226 Difference]: Without dead ends: 188 [2021-11-25 19:13:12,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:12,715 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 47 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:12,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 334 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2021-11-25 19:13:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-25 19:13:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-25 19:13:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 98 states have (on average 2.020408163265306) internal successors, (198), 184 states have internal predecessors, (198), 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) [2021-11-25 19:13:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 202 transitions. [2021-11-25 19:13:12,732 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 202 transitions. Word has length 4 [2021-11-25 19:13:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:12,732 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 202 transitions. [2021-11-25 19:13:12,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 202 transitions. [2021-11-25 19:13:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:13:12,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:12,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:13:12,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:12,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:12,934 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 157525902, now seen corresponding path program 1 times [2021-11-25 19:13:12,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:12,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168869479] [2021-11-25 19:13:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:12,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:12,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:12,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:12,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:13:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:12,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:12,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:13,006 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 [2021-11-25 19:13:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:13,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:13,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:13,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168869479] [2021-11-25 19:13:13,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168869479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:13,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:13,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:13,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489085051] [2021-11-25 19:13:13,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:13,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:13,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:13,019 INFO L87 Difference]: Start difference. First operand 188 states and 202 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:13,421 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2021-11-25 19:13:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:13:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:13,423 INFO L225 Difference]: With dead ends: 211 [2021-11-25 19:13:13,423 INFO L226 Difference]: Without dead ends: 211 [2021-11-25 19:13:13,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:13,424 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 65 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:13,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 234 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:13:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-25 19:13:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 186. [2021-11-25 19:13:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 98 states have (on average 1.989795918367347) internal successors, (195), 182 states have internal predecessors, (195), 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) [2021-11-25 19:13:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2021-11-25 19:13:13,451 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 5 [2021-11-25 19:13:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:13,451 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2021-11-25 19:13:13,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2021-11-25 19:13:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:13:13,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:13,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:13:13,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:13,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:13,663 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:13,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash 157525903, now seen corresponding path program 1 times [2021-11-25 19:13:13,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:13,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413988572] [2021-11-25 19:13:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:13,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:13,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:13,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:13,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:13:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:13,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:13:13,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:13,769 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 [2021-11-25 19:13:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:13,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:13,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:13,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413988572] [2021-11-25 19:13:13,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413988572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:13,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:13,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:13,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757031565] [2021-11-25 19:13:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:13,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:13,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:13,799 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:14,231 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2021-11-25 19:13:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:14,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:13:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:14,233 INFO L225 Difference]: With dead ends: 184 [2021-11-25 19:13:14,233 INFO L226 Difference]: Without dead ends: 184 [2021-11-25 19:13:14,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:14,234 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:14,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 276 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:13:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-25 19:13:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-25 19:13:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 98 states have (on average 1.9591836734693877) internal successors, (192), 180 states have internal predecessors, (192), 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) [2021-11-25 19:13:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 196 transitions. [2021-11-25 19:13:14,244 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 196 transitions. Word has length 5 [2021-11-25 19:13:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 196 transitions. [2021-11-25 19:13:14,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 196 transitions. [2021-11-25 19:13:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:13:14,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:14,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:14,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:14,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:14,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:14,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1058540239, now seen corresponding path program 1 times [2021-11-25 19:13:14,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:14,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345077626] [2021-11-25 19:13:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:14,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:14,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:14,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:14,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:13:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:14,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:13:14,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:14,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:14,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:14,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345077626] [2021-11-25 19:13:14,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345077626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:14,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:14,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:14,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858537796] [2021-11-25 19:13:14,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:14,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:14,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:14,582 INFO L87 Difference]: Start difference. First operand 184 states and 196 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:14,914 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2021-11-25 19:13:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:14,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:13:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:14,915 INFO L225 Difference]: With dead ends: 208 [2021-11-25 19:13:14,915 INFO L226 Difference]: Without dead ends: 208 [2021-11-25 19:13:14,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:14,917 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 54 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:14,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 240 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:13:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-25 19:13:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 183. [2021-11-25 19:13:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 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) [2021-11-25 19:13:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-11-25 19:13:14,927 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 7 [2021-11-25 19:13:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:14,928 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-11-25 19:13:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-11-25 19:13:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:13:14,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:14,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:14,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:15,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:15,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1322502935, now seen corresponding path program 1 times [2021-11-25 19:13:15,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817899068] [2021-11-25 19:13:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:15,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:15,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:15,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:13:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:15,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:13:15,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:15,239 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 [2021-11-25 19:13:15,294 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:13:15,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:13:15,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:13:15,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:13:15,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:13:15,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:13:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:15,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:15,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:15,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817899068] [2021-11-25 19:13:15,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817899068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:15,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:15,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:13:15,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720164669] [2021-11-25 19:13:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:15,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:13:15,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:15,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:13:15,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:13:15,452 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:16,102 INFO L93 Difference]: Finished difference Result 185 states and 197 transitions. [2021-11-25 19:13:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:13:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 19:13:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:16,105 INFO L225 Difference]: With dead ends: 185 [2021-11-25 19:13:16,105 INFO L226 Difference]: Without dead ends: 185 [2021-11-25 19:13:16,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:13:16,106 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 4 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:16,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:13:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-25 19:13:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-11-25 19:13:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 99 states have (on average 1.9292929292929293) internal successors, (191), 180 states have internal predecessors, (191), 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) [2021-11-25 19:13:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 195 transitions. [2021-11-25 19:13:16,113 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 195 transitions. Word has length 10 [2021-11-25 19:13:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:16,114 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 195 transitions. [2021-11-25 19:13:16,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 195 transitions. [2021-11-25 19:13:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:13:16,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:16,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:16,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:16,329 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash -388286564, now seen corresponding path program 1 times [2021-11-25 19:13:16,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:16,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329963668] [2021-11-25 19:13:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:16,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:16,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:16,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:16,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:13:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:16,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:13:16,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:16,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:16,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:16,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329963668] [2021-11-25 19:13:16,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329963668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:16,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:16,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:13:16,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748225343] [2021-11-25 19:13:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:16,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:13:16,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:13:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:13:16,447 INFO L87 Difference]: Start difference. First operand 184 states and 195 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:16,505 INFO L93 Difference]: Finished difference Result 262 states and 277 transitions. [2021-11-25 19:13:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:13:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:13:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:16,507 INFO L225 Difference]: With dead ends: 262 [2021-11-25 19:13:16,507 INFO L226 Difference]: Without dead ends: 262 [2021-11-25 19:13:16,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:16,509 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 81 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:16,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 551 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:13:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-25 19:13:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 226. [2021-11-25 19:13:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.95) internal successors, (273), 221 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2021-11-25 19:13:16,518 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 12 [2021-11-25 19:13:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:16,518 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2021-11-25 19:13:16,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2021-11-25 19:13:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:13:16,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:16,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:16,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:16,731 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash 848024593, now seen corresponding path program 1 times [2021-11-25 19:13:16,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:16,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284001475] [2021-11-25 19:13:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:16,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:16,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:16,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 19:13:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:16,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:13:16,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:16,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:16,857 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:13:16,857 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-25 19:13:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:16,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:16,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284001475] [2021-11-25 19:13:16,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284001475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:16,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:16,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:16,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791346369] [2021-11-25 19:13:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:16,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:16,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:16,877 INFO L87 Difference]: Start difference. First operand 226 states and 277 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:16,882 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2021-11-25 19:13:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 19:13:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:16,884 INFO L225 Difference]: With dead ends: 225 [2021-11-25 19:13:16,884 INFO L226 Difference]: Without dead ends: 225 [2021-11-25 19:13:16,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:16,885 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:16,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 100 Unchecked, 0.0s Time] [2021-11-25 19:13:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-25 19:13:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-25 19:13:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 140 states have (on average 1.9357142857142857) internal successors, (271), 220 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 275 transitions. [2021-11-25 19:13:16,893 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 275 transitions. Word has length 13 [2021-11-25 19:13:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:16,893 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 275 transitions. [2021-11-25 19:13:16,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 275 transitions. [2021-11-25 19:13:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:13:16,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:16,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:17,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:17,105 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 848024594, now seen corresponding path program 1 times [2021-11-25 19:13:17,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:17,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126460418] [2021-11-25 19:13:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:17,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:17,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:17,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:13:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:13:17,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:17,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:13:17,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 19:13:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:17,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:17,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126460418] [2021-11-25 19:13:17,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126460418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:17,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:17,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:17,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422077475] [2021-11-25 19:13:17,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:17,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:17,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:17,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:17,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:17,263 INFO L87 Difference]: Start difference. First operand 225 states and 275 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:17,701 INFO L93 Difference]: Finished difference Result 256 states and 311 transitions. [2021-11-25 19:13:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 19:13:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:17,703 INFO L225 Difference]: With dead ends: 256 [2021-11-25 19:13:17,703 INFO L226 Difference]: Without dead ends: 256 [2021-11-25 19:13:17,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:17,704 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 62 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:17,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 213 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:13:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-25 19:13:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 232. [2021-11-25 19:13:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 156 states have (on average 1.8397435897435896) internal successors, (287), 227 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 291 transitions. [2021-11-25 19:13:17,713 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 291 transitions. Word has length 13 [2021-11-25 19:13:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:17,713 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 291 transitions. [2021-11-25 19:13:17,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 291 transitions. [2021-11-25 19:13:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:13:17,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:17,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:17,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-25 19:13:17,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:17,925 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash 503007254, now seen corresponding path program 1 times [2021-11-25 19:13:17,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:17,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178626132] [2021-11-25 19:13:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:17,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:17,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:17,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:17,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:13:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:18,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:13:18,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:18,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:18,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:18,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178626132] [2021-11-25 19:13:18,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178626132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:18,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:18,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:18,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23737781] [2021-11-25 19:13:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:18,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:18,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:18,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:18,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:18,054 INFO L87 Difference]: Start difference. First operand 232 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:18,113 INFO L93 Difference]: Finished difference Result 245 states and 307 transitions. [2021-11-25 19:13:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:18,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 19:13:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:18,118 INFO L225 Difference]: With dead ends: 245 [2021-11-25 19:13:18,118 INFO L226 Difference]: Without dead ends: 245 [2021-11-25 19:13:18,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:18,120 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 7 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:18,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 348 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-25 19:13:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 234. [2021-11-25 19:13:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 158 states have (on average 1.8291139240506329) internal successors, (289), 229 states have internal predecessors, (289), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 293 transitions. [2021-11-25 19:13:18,132 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 293 transitions. Word has length 16 [2021-11-25 19:13:18,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:18,132 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 293 transitions. [2021-11-25 19:13:18,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 293 transitions. [2021-11-25 19:13:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:13:18,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:18,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:18,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:18,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:18,345 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash 503007304, now seen corresponding path program 1 times [2021-11-25 19:13:18,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:18,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066448827] [2021-11-25 19:13:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:18,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:18,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:18,347 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:18,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:13:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:18,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:13:18,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:18,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:18,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066448827] [2021-11-25 19:13:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066448827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:18,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:18,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:18,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680950193] [2021-11-25 19:13:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:18,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:18,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:18,470 INFO L87 Difference]: Start difference. First operand 234 states and 293 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:18,748 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2021-11-25 19:13:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:18,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 19:13:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:18,751 INFO L225 Difference]: With dead ends: 231 [2021-11-25 19:13:18,751 INFO L226 Difference]: Without dead ends: 231 [2021-11-25 19:13:18,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:18,752 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:18,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 205 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:13:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-25 19:13:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 223. [2021-11-25 19:13:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 158 states have (on average 1.639240506329114) internal successors, (259), 218 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 263 transitions. [2021-11-25 19:13:18,760 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 263 transitions. Word has length 16 [2021-11-25 19:13:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:18,760 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 263 transitions. [2021-11-25 19:13:18,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 263 transitions. [2021-11-25 19:13:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:13:18,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:18,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:18,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:18,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:18,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1586642756, now seen corresponding path program 1 times [2021-11-25 19:13:18,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:18,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917091042] [2021-11-25 19:13:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:18,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:18,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:18,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:18,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:13:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:19,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:13:19,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:19,102 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:13:19,103 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-25 19:13:19,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:19,161 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 26 treesize of output 14 [2021-11-25 19:13:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:19,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:19,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:19,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917091042] [2021-11-25 19:13:19,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917091042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:19,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:19,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:13:19,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334064098] [2021-11-25 19:13:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:19,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:13:19,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:13:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:19,172 INFO L87 Difference]: Start difference. First operand 223 states and 263 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:19,687 INFO L93 Difference]: Finished difference Result 228 states and 269 transitions. [2021-11-25 19:13:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:13:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 19:13:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:19,689 INFO L225 Difference]: With dead ends: 228 [2021-11-25 19:13:19,689 INFO L226 Difference]: Without dead ends: 228 [2021-11-25 19:13:19,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:19,690 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:19,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 432 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:13:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-25 19:13:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2021-11-25 19:13:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.6358024691358024) internal successors, (265), 222 states have internal predecessors, (265), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 269 transitions. [2021-11-25 19:13:19,698 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 269 transitions. Word has length 17 [2021-11-25 19:13:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:19,699 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 269 transitions. [2021-11-25 19:13:19,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 269 transitions. [2021-11-25 19:13:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:13:19,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:19,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:19,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:19,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:19,911 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:19,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1586642755, now seen corresponding path program 1 times [2021-11-25 19:13:19,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:19,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212422020] [2021-11-25 19:13:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:19,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:19,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:19,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:19,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:13:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:20,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:13:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:20,057 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:20,058 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:13:20,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:20,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:20,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-25 19:13:20,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:20,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:20,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212422020] [2021-11-25 19:13:20,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212422020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:20,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:20,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:13:20,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389399534] [2021-11-25 19:13:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:20,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:13:20,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:13:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:13:20,215 INFO L87 Difference]: Start difference. First operand 227 states and 269 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:21,116 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2021-11-25 19:13:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:13:21,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 19:13:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:21,118 INFO L225 Difference]: With dead ends: 229 [2021-11-25 19:13:21,118 INFO L226 Difference]: Without dead ends: 229 [2021-11-25 19:13:21,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:13:21,119 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:21,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 513 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:13:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-25 19:13:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2021-11-25 19:13:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.623456790123457) internal successors, (263), 222 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2021-11-25 19:13:21,127 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 17 [2021-11-25 19:13:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:21,127 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2021-11-25 19:13:21,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2021-11-25 19:13:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:13:21,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:21,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:21,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:21,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:13:21,340 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash 509612229, now seen corresponding path program 1 times [2021-11-25 19:13:21,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860531316] [2021-11-25 19:13:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:21,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:21,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:21,360 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:21,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 19:13:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:21,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:13:21,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:21,558 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:13:21,558 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 [2021-11-25 19:13:21,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:21,692 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:21,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:13:21,732 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 34 treesize of output 16 [2021-11-25 19:13:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:13:21,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:21,790 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_230 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_230) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))))) (_ bv1 1)))) is different from false [2021-11-25 19:13:21,803 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_230 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_230) c_create_data_~data~0.base) .cse0))))))))))) is different from false [2021-11-25 19:13:21,828 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:21,828 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-11-25 19:13:21,832 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 58 treesize of output 46 [2021-11-25 19:13:21,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-25 19:13:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-25 19:13:21,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:21,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860531316] [2021-11-25 19:13:21,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860531316] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:21,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [244396496] [2021-11-25 19:13:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:21,947 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:21,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:21,975 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:22,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 19:13:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:22,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:13:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:22,307 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:13:22,308 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 [2021-11-25 19:13:22,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:22,420 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:22,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:13:22,457 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 34 treesize of output 16 [2021-11-25 19:13:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:13:22,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:22,538 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_272 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_272) c_create_data_~data~0.base) .cse0)))))) (_ bv1 1)))) is different from false [2021-11-25 19:13:22,561 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:22,561 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2021-11-25 19:13:22,564 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 56 treesize of output 44 [2021-11-25 19:13:22,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-25 19:13:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-25 19:13:22,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [244396496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:22,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855201147] [2021-11-25 19:13:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:22,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:22,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:22,636 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:22,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:13:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:22,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:13:22,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:22,805 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:13:22,806 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 36 treesize of output 38 [2021-11-25 19:13:22,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:22,899 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:22,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2021-11-25 19:13:22,946 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 34 treesize of output 16 [2021-11-25 19:13:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:13:22,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:22,981 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_314 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_314) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:13:22,993 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_314 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_314) c_create_data_~data~0.base) .cse0)))))))) (_ bv1 1)))) is different from false [2021-11-25 19:13:23,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:23,016 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2021-11-25 19:13:23,019 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 56 treesize of output 44 [2021-11-25 19:13:23,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-25 19:13:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-25 19:13:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855201147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:23,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:23,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 13 [2021-11-25 19:13:23,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220429375] [2021-11-25 19:13:23,093 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:23,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:13:23,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:13:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=54, Unknown=7, NotChecked=90, Total=182 [2021-11-25 19:13:23,096 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:23,841 INFO L93 Difference]: Finished difference Result 234 states and 271 transitions. [2021-11-25 19:13:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:13:23,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-25 19:13:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:23,843 INFO L225 Difference]: With dead ends: 234 [2021-11-25 19:13:23,843 INFO L226 Difference]: Without dead ends: 234 [2021-11-25 19:13:23,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=80, Unknown=7, NotChecked=110, Total=240 [2021-11-25 19:13:23,844 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 50 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 674 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:23,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 882 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 674 Unchecked, 0.6s Time] [2021-11-25 19:13:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-25 19:13:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2021-11-25 19:13:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.6111111111111112) internal successors, (261), 221 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2021-11-25 19:13:23,853 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 22 [2021-11-25 19:13:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:23,853 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2021-11-25 19:13:23,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2021-11-25 19:13:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:13:23,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:23,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:23,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:24,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:24,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:24,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:24,457 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 509612230, now seen corresponding path program 1 times [2021-11-25 19:13:24,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454374442] [2021-11-25 19:13:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:24,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:24,459 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:24,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 19:13:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:13:24,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:24,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 19:13:24,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:13:24,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:24,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:24,897 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:24,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:24,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:25,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:13:25,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:25,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:25,613 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_360 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_360) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_360 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_360) c_create_data_~data~0.base) .cse2) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_359) c_create_data_~data~0.base) .cse2)))))) is different from false [2021-11-25 19:13:25,665 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_360 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_360) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_360 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_360) c_create_data_~data~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_359) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:25,738 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_360 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_360) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_359) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_360 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3) v_ArrVal_360) c_create_data_~data~0.base) .cse3)))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))) is different from false [2021-11-25 19:13:25,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:25,756 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2021-11-25 19:13:25,759 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 54 treesize of output 36 [2021-11-25 19:13:25,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:13:25,792 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:25,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:13:25,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:25,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-25 19:13:25,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:25,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-25 19:13:25,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:25,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 19:13:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-25 19:13:25,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:25,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454374442] [2021-11-25 19:13:25,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454374442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:25,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [510463545] [2021-11-25 19:13:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:25,944 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:25,945 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:25,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 19:13:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:26,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:13:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:26,299 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:26,299 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:13:26,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 19:13:26,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:26,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:26,443 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:26,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:26,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:26,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:13:26,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:26,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:26,717 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_404) c_create_data_~data~0.base) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_405) c_create_data_~data~0.base) .cse0))))) (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_404) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))) (bvule (bvadd (_ bv4 32) .cse1 .cse2) (bvadd (_ bv8 32) .cse1 .cse2))))) is different from false [2021-11-25 19:13:26,784 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_404) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_404) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_405) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:26,851 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_404) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_405) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3) v_ArrVal_404) c_create_data_~data~0.base) .cse3)))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))) is different from false [2021-11-25 19:13:26,869 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:26,869 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:13:26,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:26,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-25 19:13:26,886 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 62 treesize of output 50 [2021-11-25 19:13:26,890 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 96 treesize of output 78 [2021-11-25 19:13:26,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-25 19:13:26,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2021-11-25 19:13:27,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:27,041 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2021-11-25 19:13:27,043 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 54 treesize of output 36 [2021-11-25 19:13:27,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:13:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-25 19:13:27,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [510463545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:27,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758537336] [2021-11-25 19:13:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:27,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:27,184 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:27,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:13:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:13:27,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:27,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 19:13:27,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:13:27,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:27,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:27,480 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:27,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:27,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:27,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:13:27,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:27,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:27,746 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_451 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_450) c_create_data_~data~0.base) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_451) c_create_data_~data~0.base) .cse0))))) (forall ((v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_450) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))) (bvule (bvadd (_ bv4 32) .cse1 .cse2) (bvadd (_ bv8 32) .cse1 .cse2))))) is different from false [2021-11-25 19:13:27,800 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_450) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_451 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_450) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_451) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:27,850 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1) v_ArrVal_450) c_create_data_~data~0.base) .cse1)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_451 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_450) c_create_data_~data~0.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_451) c_create_data_~data~0.base) .cse3))))))) is different from false [2021-11-25 19:13:27,874 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:27,875 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2021-11-25 19:13:27,877 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 54 treesize of output 36 [2021-11-25 19:13:27,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:13:27,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:27,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:13:27,928 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:27,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-25 19:13:27,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:27,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-25 19:13:27,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:27,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 19:13:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-25 19:13:27,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758537336] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:27,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:27,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 20 [2021-11-25 19:13:27,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315372363] [2021-11-25 19:13:27,977 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:27,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:13:27,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:13:27,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=108, Unknown=9, NotChecked=252, Total=420 [2021-11-25 19:13:27,979 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:31,293 INFO L93 Difference]: Finished difference Result 238 states and 277 transitions. [2021-11-25 19:13:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:13:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-25 19:13:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:31,295 INFO L225 Difference]: With dead ends: 238 [2021-11-25 19:13:31,296 INFO L226 Difference]: Without dead ends: 238 [2021-11-25 19:13:31,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=72, Invalid=165, Unknown=9, NotChecked=306, Total=552 [2021-11-25 19:13:31,297 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 14 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 816 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:31,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1347 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 427 Invalid, 0 Unknown, 816 Unchecked, 2.8s Time] [2021-11-25 19:13:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-25 19:13:31,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2021-11-25 19:13:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 172 states have (on average 1.5755813953488371) internal successors, (271), 231 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 275 transitions. [2021-11-25 19:13:31,304 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 275 transitions. Word has length 22 [2021-11-25 19:13:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:31,305 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 275 transitions. [2021-11-25 19:13:31,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:31,305 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 275 transitions. [2021-11-25 19:13:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:13:31,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:31,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:31,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-25 19:13:31,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:31,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:31,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:31,922 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:31,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2075876957, now seen corresponding path program 2 times [2021-11-25 19:13:31,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268814588] [2021-11-25 19:13:31,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:13:31,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:31,924 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:31,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 19:13:32,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:32,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:32,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:13:32,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:32,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 19:13:32,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:13:32,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:32,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:32,360 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:32,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:32,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:32,518 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:32,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:32,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:32,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:13:32,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:32,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:33,125 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_513) c_create_data_~data~0.base) .cse0) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_512) c_create_data_~data~0.base) .cse0))))) (forall ((v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_513) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse1 (_ bv4 32) .cse2) (bvadd .cse1 (_ bv8 32) .cse2))))) is different from false [2021-11-25 19:13:33,178 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_513) c_create_data_~data~0.base) .cse1) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_512) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4) v_ArrVal_513) c_create_data_~data~0.base) .cse4))) (.cse3 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse2 (_ bv4 32) .cse3) (bvadd .cse2 (_ bv8 32) .cse3))))) is different from false [2021-11-25 19:13:33,243 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_513) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_513) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_512) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:33,342 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_510) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_511) c_create_data_~data~0.base) .cse2) v_ArrVal_513) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_511)) (.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select .cse5 c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_510) .cse3 v_ArrVal_513) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_512) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:33,524 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_511))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_510) .cse1 v_ArrVal_513) c_create_data_~data~0.base) .cse2) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_512) c_create_data_~data~0.base) .cse2)))))))) (forall ((v_ArrVal_510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse7 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_510) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_511) c_create_data_~data~0.base) .cse7) v_ArrVal_513)) c_create_data_~data~0.base) .cse7))) (.cse5 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse4 (_ bv8 32) .cse5) (bvadd .cse4 .cse5 (_ bv12 32)))))) is different from false [2021-11-25 19:13:33,609 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_510) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_511) c_create_data_~data~0.base) .cse2) v_ArrVal_513)) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_513 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_511))) (let ((.cse4 (select (select .cse6 c_create_data_~data~0.base) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_510) .cse4 v_ArrVal_513) c_create_data_~data~0.base) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_512) c_create_data_~data~0.base) .cse5))))))))) is different from false [2021-11-25 19:13:33,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:33,629 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2021-11-25 19:13:33,642 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:33,642 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2021-11-25 19:13:33,648 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 102 treesize of output 84 [2021-11-25 19:13:33,652 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 174 treesize of output 144 [2021-11-25 19:13:33,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 86 [2021-11-25 19:13:33,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2021-11-25 19:13:33,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2021-11-25 19:13:33,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:33,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2021-11-25 19:13:33,775 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:33,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2021-11-25 19:13:33,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:33,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2021-11-25 19:13:33,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:33,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2021-11-25 19:13:33,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:13:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-25 19:13:33,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268814588] [2021-11-25 19:13:33,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268814588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1781256856] [2021-11-25 19:13:33,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:13:33,952 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:33,953 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:33,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 19:13:34,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:34,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:34,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:13:34,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:34,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-25 19:13:34,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:13:34,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:34,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:34,552 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:34,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:34,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:34,695 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:34,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:34,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:34,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:13:34,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:34,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:34,961 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_574) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_574) c_create_data_~data~0.base) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_575) c_create_data_~data~0.base) .cse2)))))) is different from false [2021-11-25 19:13:35,017 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_574) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_574) c_create_data_~data~0.base) .cse4) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_575) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:35,098 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_574) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_574) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_575) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:35,190 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_573) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_572) c_create_data_~data~0.base) .cse2) v_ArrVal_574) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_572)) (.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select .cse5 c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_573) .cse3 v_ArrVal_574) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_575) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:35,251 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_572))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_573) .cse1 v_ArrVal_574) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_575) c_create_data_~data~0.base) .cse2)))))))) (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse5 (let ((.cse7 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_573) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_572) c_create_data_~data~0.base) .cse7) v_ArrVal_574)) c_create_data_~data~0.base) .cse7)))) (bvule (bvadd (_ bv8 32) .cse4 .cse5) (bvadd .cse4 .cse5 (_ bv12 32)))))) is different from false [2021-11-25 19:13:35,347 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_573) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_572) c_create_data_~data~0.base) .cse2) v_ArrVal_574)) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_573 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_572))) (let ((.cse4 (select (select .cse6 c_create_data_~data~0.base) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_573) .cse4 v_ArrVal_574) c_create_data_~data~0.base) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_575) c_create_data_~data~0.base) .cse5))))))))) is different from false [2021-11-25 19:13:35,393 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:35,394 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2021-11-25 19:13:35,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:35,403 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2021-11-25 19:13:35,413 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 102 treesize of output 84 [2021-11-25 19:13:35,418 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 286 treesize of output 244 [2021-11-25 19:13:35,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 186 [2021-11-25 19:13:35,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 162 [2021-11-25 19:13:35,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 160 [2021-11-25 19:13:35,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:35,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2021-11-25 19:13:35,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:35,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2021-11-25 19:13:35,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:35,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2021-11-25 19:13:35,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:35,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2021-11-25 19:13:35,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:13:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-25 19:13:35,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1781256856] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:35,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478109114] [2021-11-25 19:13:35,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:13:35,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:35,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:35,652 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:35,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 19:13:35,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:13:35,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:35,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:13:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:35,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-11-25 19:13:35,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:13:35,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:35,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:13:35,996 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:35,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:36,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:36,151 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:13:36,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:13:36,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:13:36,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:13:36,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:13:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:36,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:36,486 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_637) c_create_data_~data~0.base) .cse0) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_636) c_create_data_~data~0.base) .cse0))))) (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_637) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse1 .cse2) (bvadd (_ bv8 32) .cse1 .cse2))))) is different from false [2021-11-25 19:13:36,537 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_637) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_637) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_636) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:36,621 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_637) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_637) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_636) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:36,705 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_635) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_634) c_create_data_~data~0.base) .cse2) v_ArrVal_637) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_634)) (.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select .cse5 c_create_data_~data~0.base) .cse4))) (bvule (bvadd (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_635) .cse3 v_ArrVal_637) c_create_data_~data~0.base) .cse4) (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_636) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-11-25 19:13:36,946 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_634))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_635) .cse1 v_ArrVal_637) c_create_data_~data~0.base) .cse2) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_636) c_create_data_~data~0.base) .cse2)))))))) (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse7 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_635) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_634) c_create_data_~data~0.base) .cse7) v_ArrVal_637)) c_create_data_~data~0.base) .cse7))) (.cse5 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv8 32) .cse4 .cse5) (bvadd .cse4 .cse5 (_ bv12 32)))))) is different from false [2021-11-25 19:13:37,016 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_635) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_634) c_create_data_~data~0.base) .cse2) v_ArrVal_637)) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_634))) (let ((.cse4 (select (select .cse6 c_create_data_~data~0.base) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_635) .cse4 v_ArrVal_637) c_create_data_~data~0.base) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_636) c_create_data_~data~0.base) .cse5))))))))) is different from false [2021-11-25 19:13:37,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:37,038 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2021-11-25 19:13:37,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:37,053 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2021-11-25 19:13:37,058 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 754 treesize of output 640 [2021-11-25 19:13:37,074 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 1360 treesize of output 1258 [2021-11-25 19:13:37,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1254 treesize of output 1158 [2021-11-25 19:13:37,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1158 treesize of output 1126 [2021-11-25 19:13:37,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1126 treesize of output 1030 [2021-11-25 19:13:37,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1030 treesize of output 830 [2021-11-25 19:13:49,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:49,917 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2021-11-25 19:13:49,929 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:49,930 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2021-11-25 19:13:49,946 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 102 treesize of output 84 [2021-11-25 19:13:49,951 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 286 treesize of output 244 [2021-11-25 19:13:49,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 186 [2021-11-25 19:13:49,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 162 [2021-11-25 19:13:49,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 160 [2021-11-25 19:13:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-25 19:13:50,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478109114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:50,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:50,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9, 11, 9, 11] total 31 [2021-11-25 19:13:50,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666518183] [2021-11-25 19:13:50,216 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:50,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 19:13:50,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 19:13:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=156, Unknown=18, NotChecked=738, Total=992 [2021-11-25 19:13:50,218 INFO L87 Difference]: Start difference. First operand 236 states and 275 transitions. Second operand has 32 states, 31 states have (on average 2.0) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:56,655 INFO L93 Difference]: Finished difference Result 248 states and 287 transitions. [2021-11-25 19:13:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:13:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 19:13:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:56,658 INFO L225 Difference]: With dead ends: 248 [2021-11-25 19:13:56,658 INFO L226 Difference]: Without dead ends: 248 [2021-11-25 19:13:56,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 125 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=109, Invalid=251, Unknown=18, NotChecked=882, Total=1260 [2021-11-25 19:13:56,659 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 21 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1636 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:56,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 2266 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 632 Invalid, 0 Unknown, 1636 Unchecked, 3.1s Time] [2021-11-25 19:13:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-25 19:13:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2021-11-25 19:13:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 182 states have (on average 1.543956043956044) internal successors, (281), 241 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 285 transitions. [2021-11-25 19:13:56,668 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 285 transitions. Word has length 27 [2021-11-25 19:13:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:56,668 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 285 transitions. [2021-11-25 19:13:56,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 285 transitions. [2021-11-25 19:13:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:13:56,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:56,670 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:56,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:56,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-25 19:13:57,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:57,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:57,296 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:13:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1508640986, now seen corresponding path program 3 times [2021-11-25 19:13:57,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:13:57,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261676010] [2021-11-25 19:13:57,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:57,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:13:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:13:57,298 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:13:57,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 19:13:57,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:13:57,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:57,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:13:57,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:57,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:57,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:13:57,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261676010] [2021-11-25 19:13:57,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261676010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:57,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1983441416] [2021-11-25 19:13:57,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:57,953 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:13:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:13:57,953 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:13:57,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-25 19:13:58,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:13:58,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:58,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:13:58,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:58,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:58,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1983441416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933142773] [2021-11-25 19:13:58,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:58,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:58,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:58,570 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:58,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 19:13:59,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:13:59,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:59,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:13:59,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:59,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933142773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:59,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:13:59,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-25 19:13:59,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035797830] [2021-11-25 19:13:59,303 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:59,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:13:59,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:13:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:13:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:13:59,305 INFO L87 Difference]: Start difference. First operand 246 states and 285 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:59,463 INFO L93 Difference]: Finished difference Result 243 states and 279 transitions. [2021-11-25 19:13:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:13:59,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-25 19:13:59,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:59,466 INFO L225 Difference]: With dead ends: 243 [2021-11-25 19:13:59,466 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 19:13:59,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:13:59,467 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 48 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:59,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1017 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:13:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 19:13:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-11-25 19:13:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 178 states have (on average 1.5337078651685394) internal successors, (273), 236 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:13:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 277 transitions. [2021-11-25 19:13:59,475 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 277 transitions. Word has length 32 [2021-11-25 19:13:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:59,476 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 277 transitions. [2021-11-25 19:13:59,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 277 transitions. [2021-11-25 19:13:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:13:59,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:59,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:59,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-25 19:13:59,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-25 19:13:59,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:00,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:00,082 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting create_dataErr24REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1091018630, now seen corresponding path program 1 times [2021-11-25 19:14:00,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:00,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400135982] [2021-11-25 19:14:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:00,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:00,083 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:00,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-25 19:14:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:00,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:00,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:00,311 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 [2021-11-25 19:14:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:00,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:00,320 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400135982] [2021-11-25 19:14:00,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400135982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:00,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:00,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:14:00,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664524436] [2021-11-25 19:14:00,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:14:00,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:14:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:00,322 INFO L87 Difference]: Start difference. First operand 241 states and 277 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:00,588 INFO L93 Difference]: Finished difference Result 243 states and 271 transitions. [2021-11-25 19:14:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:14:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-25 19:14:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:00,590 INFO L225 Difference]: With dead ends: 243 [2021-11-25 19:14:00,591 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 19:14:00,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:00,592 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 22 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:00,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 235 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:14:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 19:14:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2021-11-25 19:14:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 178 states have (on average 1.4662921348314606) internal successors, (261), 232 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:14:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 265 transitions. [2021-11-25 19:14:00,601 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 265 transitions. Word has length 42 [2021-11-25 19:14:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:00,601 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 265 transitions. [2021-11-25 19:14:00,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 265 transitions. [2021-11-25 19:14:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:14:00,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:00,603 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:00,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:00,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:00,815 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting create_dataErr25REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1091018631, now seen corresponding path program 1 times [2021-11-25 19:14:00,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:00,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047969461] [2021-11-25 19:14:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:00,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:00,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:00,817 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:00,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-25 19:14:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:01,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:14:01,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:01,056 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 [2021-11-25 19:14:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:01,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:01,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047969461] [2021-11-25 19:14:01,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047969461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:01,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:01,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:14:01,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57837775] [2021-11-25 19:14:01,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:01,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:14:01,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:01,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:14:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:01,081 INFO L87 Difference]: Start difference. First operand 237 states and 265 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:01,393 INFO L93 Difference]: Finished difference Result 239 states and 259 transitions. [2021-11-25 19:14:01,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:14:01,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-25 19:14:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:01,396 INFO L225 Difference]: With dead ends: 239 [2021-11-25 19:14:01,396 INFO L226 Difference]: Without dead ends: 239 [2021-11-25 19:14:01,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:01,397 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:01,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 234 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:14:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-25 19:14:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2021-11-25 19:14:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 178 states have (on average 1.398876404494382) internal successors, (249), 228 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:14:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 253 transitions. [2021-11-25 19:14:01,406 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 253 transitions. Word has length 42 [2021-11-25 19:14:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:01,407 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 253 transitions. [2021-11-25 19:14:01,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:14:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 253 transitions. [2021-11-25 19:14:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:14:01,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:01,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:01,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-25 19:14:01,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:01,616 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1777365236, now seen corresponding path program 1 times [2021-11-25 19:14:01,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:01,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444714863] [2021-11-25 19:14:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:01,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:01,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:01,618 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:01,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-25 19:14:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:01,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:14:01,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:01,940 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 [2021-11-25 19:14:02,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:02,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:14:03,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:03,791 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-25 19:14:03,792 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 4 case distinctions, treesize of input 29 treesize of output 41 [2021-11-25 19:14:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:14:03,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:06,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444714863] [2021-11-25 19:14:06,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444714863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1022955891] [2021-11-25 19:14:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:06,044 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:06,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:06,045 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:06,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-25 19:14:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:06,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:14:06,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:06,467 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 [2021-11-25 19:14:09,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:09,221 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-11-25 19:14:09,222 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 2 case distinctions, treesize of input 21 treesize of output 35 [2021-11-25 19:14:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:09,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:09,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1022955891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:09,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:09,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2021-11-25 19:14:09,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817847539] [2021-11-25 19:14:09,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:09,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:14:09,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:14:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2021-11-25 19:14:09,257 INFO L87 Difference]: Start difference. First operand 233 states and 253 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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) [2021-11-25 19:14:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:09,609 INFO L93 Difference]: Finished difference Result 294 states and 323 transitions. [2021-11-25 19:14:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:14:09,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 45 [2021-11-25 19:14:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:09,612 INFO L225 Difference]: With dead ends: 294 [2021-11-25 19:14:09,612 INFO L226 Difference]: Without dead ends: 294 [2021-11-25 19:14:09,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2021-11-25 19:14:09,613 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 76 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:09,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 480 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 266 Unchecked, 0.3s Time] [2021-11-25 19:14:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-25 19:14:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 249. [2021-11-25 19:14:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 192 states have (on average 1.4010416666666667) internal successors, (269), 242 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 275 transitions. [2021-11-25 19:14:09,622 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 275 transitions. Word has length 45 [2021-11-25 19:14:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:09,623 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 275 transitions. [2021-11-25 19:14:09,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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) [2021-11-25 19:14:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 275 transitions. [2021-11-25 19:14:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:14:09,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:09,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:09,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:09,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-11-25 19:14:10,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:10,038 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1777365235, now seen corresponding path program 1 times [2021-11-25 19:14:10,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:10,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220582959] [2021-11-25 19:14:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:10,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:10,040 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:10,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-25 19:14:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:14:10,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:10,360 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 [2021-11-25 19:14:10,365 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 [2021-11-25 19:14:10,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:10,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:14:11,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:11,082 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:14:11,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:14:11,099 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:14:11,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:14:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:14:11,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:13,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220582959] [2021-11-25 19:14:13,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220582959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [320552287] [2021-11-25 19:14:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:13,489 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:13,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:13,490 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:13,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-25 19:14:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:14,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:14:14,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:14,208 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 [2021-11-25 19:14:14,215 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 [2021-11-25 19:14:16,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:16,891 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:14:16,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:14:16,908 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:14:16,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:14:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:16,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:16,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [320552287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:16,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:16,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-25 19:14:16,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814793795] [2021-11-25 19:14:16,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:16,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:14:16,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:16,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:14:16,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2021-11-25 19:14:16,973 INFO L87 Difference]: Start difference. First operand 249 states and 275 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2021-11-25 19:14:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:17,768 INFO L93 Difference]: Finished difference Result 318 states and 351 transitions. [2021-11-25 19:14:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:14:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 45 [2021-11-25 19:14:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:17,772 INFO L225 Difference]: With dead ends: 318 [2021-11-25 19:14:17,773 INFO L226 Difference]: Without dead ends: 318 [2021-11-25 19:14:17,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2021-11-25 19:14:17,774 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 78 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:17,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 601 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 225 Unchecked, 0.8s Time] [2021-11-25 19:14:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-25 19:14:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 249. [2021-11-25 19:14:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 192 states have (on average 1.390625) internal successors, (267), 242 states have internal predecessors, (267), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2021-11-25 19:14:17,783 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 45 [2021-11-25 19:14:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:17,783 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 273 transitions. [2021-11-25 19:14:17,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2021-11-25 19:14:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 273 transitions. [2021-11-25 19:14:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:14:17,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:17,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:17,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:17,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-25 19:14:18,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:18,189 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1240596815, now seen corresponding path program 1 times [2021-11-25 19:14:18,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:18,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12052249] [2021-11-25 19:14:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:18,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:18,191 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:18,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-25 19:14:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:18,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:14:18,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:18,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:18,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:18,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:18,631 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-25 19:14:18,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-25 19:14:18,742 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-25 19:14:18,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-25 19:14:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:18,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:18,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12052249] [2021-11-25 19:14:18,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12052249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:18,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:18,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:14:18,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771348706] [2021-11-25 19:14:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:18,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:14:18,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:14:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:18,814 INFO L87 Difference]: Start difference. First operand 249 states and 273 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-11-25 19:14:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:19,283 INFO L93 Difference]: Finished difference Result 293 states and 325 transitions. [2021-11-25 19:14:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:14:19,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 47 [2021-11-25 19:14:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:19,287 INFO L225 Difference]: With dead ends: 293 [2021-11-25 19:14:19,287 INFO L226 Difference]: Without dead ends: 293 [2021-11-25 19:14:19,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:14:19,288 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 27 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:19,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 711 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:14:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-25 19:14:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 259. [2021-11-25 19:14:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 202 states have (on average 1.3762376237623761) internal successors, (278), 252 states have internal predecessors, (278), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 284 transitions. [2021-11-25 19:14:19,297 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 284 transitions. Word has length 47 [2021-11-25 19:14:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:19,297 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 284 transitions. [2021-11-25 19:14:19,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-11-25 19:14:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 284 transitions. [2021-11-25 19:14:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:14:19,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:19,299 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:19,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-11-25 19:14:19,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:19,508 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:19,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1147840785, now seen corresponding path program 1 times [2021-11-25 19:14:19,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:19,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413447196] [2021-11-25 19:14:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:19,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:19,509 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:19,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-25 19:14:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:19,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:19,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:19,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:19,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:19,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413447196] [2021-11-25 19:14:19,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413447196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:19,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:19,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:14:19,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540589707] [2021-11-25 19:14:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:19,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:14:19,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:14:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:14:19,842 INFO L87 Difference]: Start difference. First operand 259 states and 284 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-25 19:14:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:19,877 INFO L93 Difference]: Finished difference Result 267 states and 290 transitions. [2021-11-25 19:14:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:14:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 47 [2021-11-25 19:14:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:19,879 INFO L225 Difference]: With dead ends: 267 [2021-11-25 19:14:19,879 INFO L226 Difference]: Without dead ends: 267 [2021-11-25 19:14:19,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:14:19,880 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:19,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 458 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:14:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-25 19:14:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2021-11-25 19:14:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 208 states have (on average 1.3557692307692308) internal successors, (282), 258 states have internal predecessors, (282), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:14:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2021-11-25 19:14:19,889 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 47 [2021-11-25 19:14:19,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:19,889 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2021-11-25 19:14:19,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-25 19:14:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2021-11-25 19:14:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:14:19,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:19,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:19,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:20,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:20,103 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1348996156, now seen corresponding path program 1 times [2021-11-25 19:14:20,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:20,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267349608] [2021-11-25 19:14:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:20,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:20,106 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:20,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-25 19:14:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:20,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:14:20,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:20,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:20,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:14:21,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:21,399 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:14:21,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2021-11-25 19:14:21,422 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:14:21,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:14:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:14:21,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:22,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267349608] [2021-11-25 19:14:22,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267349608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372691972] [2021-11-25 19:14:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:22,631 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:22,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:22,631 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:22,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-25 19:14:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:23,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:14:23,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:23,155 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 [2021-11-25 19:14:23,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:23,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:14:23,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:25,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:25,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:25,524 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:14:25,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 22 treesize of output 28 [2021-11-25 19:14:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:25,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:25,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [372691972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:25,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:25,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-11-25 19:14:25,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139290262] [2021-11-25 19:14:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:25,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:14:25,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:14:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:14:25,730 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-11-25 19:14:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:26,836 INFO L93 Difference]: Finished difference Result 305 states and 332 transitions. [2021-11-25 19:14:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:14:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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 47 [2021-11-25 19:14:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:26,839 INFO L225 Difference]: With dead ends: 305 [2021-11-25 19:14:26,839 INFO L226 Difference]: Without dead ends: 305 [2021-11-25 19:14:26,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:14:26,840 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 14 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:26,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 616 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 144 Unchecked, 1.0s Time] [2021-11-25 19:14:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-25 19:14:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2021-11-25 19:14:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 245 states have (on average 1.3142857142857143) internal successors, (322), 295 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:14:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 331 transitions. [2021-11-25 19:14:26,849 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 331 transitions. Word has length 47 [2021-11-25 19:14:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:26,849 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 331 transitions. [2021-11-25 19:14:26,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-11-25 19:14:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 331 transitions. [2021-11-25 19:14:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:14:26,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:26,850 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:26,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:27,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:27,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:27,251 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1348996155, now seen corresponding path program 1 times [2021-11-25 19:14:27,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:27,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91027479] [2021-11-25 19:14:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:27,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:27,254 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:27,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-25 19:14:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:27,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:14:27,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:27,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:27,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:14:29,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:29,401 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-25 19:14:29,401 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 4 case distinctions, treesize of input 23 treesize of output 35 [2021-11-25 19:14:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:14:29,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:31,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:31,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91027479] [2021-11-25 19:14:31,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91027479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:31,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [504556559] [2021-11-25 19:14:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:31,664 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:31,664 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:31,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-11-25 19:14:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:32,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:14:32,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:32,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-25 19:14:34,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:34,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:34,419 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:14:34,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 29 [2021-11-25 19:14:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:34,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:34,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [504556559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:34,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:34,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-11-25 19:14:34,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492642667] [2021-11-25 19:14:34,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:34,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:14:34,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:14:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2021-11-25 19:14:34,591 INFO L87 Difference]: Start difference. First operand 304 states and 331 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-11-25 19:14:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:34,990 INFO L93 Difference]: Finished difference Result 305 states and 331 transitions. [2021-11-25 19:14:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:14:34,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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 47 [2021-11-25 19:14:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:34,993 INFO L225 Difference]: With dead ends: 305 [2021-11-25 19:14:34,993 INFO L226 Difference]: Without dead ends: 305 [2021-11-25 19:14:34,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2021-11-25 19:14:34,994 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 11 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:34,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 638 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 153 Unchecked, 0.3s Time] [2021-11-25 19:14:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-25 19:14:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2021-11-25 19:14:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 245 states have (on average 1.310204081632653) internal successors, (321), 295 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:14:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 330 transitions. [2021-11-25 19:14:35,004 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 330 transitions. Word has length 47 [2021-11-25 19:14:35,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:35,004 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 330 transitions. [2021-11-25 19:14:35,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-11-25 19:14:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 330 transitions. [2021-11-25 19:14:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:14:35,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:35,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:35,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:35,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-25 19:14:35,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:35,410 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash 10765426, now seen corresponding path program 1 times [2021-11-25 19:14:35,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:35,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002540912] [2021-11-25 19:14:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:35,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:35,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:35,412 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:35,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-25 19:14:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:35,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:14:35,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:35,796 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 [2021-11-25 19:14:35,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:35,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:14:37,405 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 19:14:37,405 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 4 case distinctions, treesize of input 31 treesize of output 47 [2021-11-25 19:14:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:14:37,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:39,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:39,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002540912] [2021-11-25 19:14:39,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002540912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:39,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [16040260] [2021-11-25 19:14:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:39,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:39,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:39,676 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-25 19:14:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:40,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:14:40,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:40,285 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 [2021-11-25 19:14:43,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:14:43,137 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-11-25 19:14:43,137 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 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-25 19:14:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:43,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:43,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [16040260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:43,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:43,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-11-25 19:14:43,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290808719] [2021-11-25 19:14:43,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:43,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:14:43,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:43,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:14:43,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=63, Unknown=2, NotChecked=0, Total=90 [2021-11-25 19:14:43,174 INFO L87 Difference]: Start difference. First operand 304 states and 330 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-11-25 19:14:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:43,681 INFO L93 Difference]: Finished difference Result 356 states and 388 transitions. [2021-11-25 19:14:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:14:43,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 49 [2021-11-25 19:14:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:43,685 INFO L225 Difference]: With dead ends: 356 [2021-11-25 19:14:43,686 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 19:14:43,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=25, Invalid=63, Unknown=2, NotChecked=0, Total=90 [2021-11-25 19:14:43,687 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 75 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:43,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 404 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 173 Unchecked, 0.5s Time] [2021-11-25 19:14:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 19:14:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 315. [2021-11-25 19:14:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 255 states have (on average 1.3098039215686275) internal successors, (334), 305 states have internal predecessors, (334), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:14:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 345 transitions. [2021-11-25 19:14:43,699 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 345 transitions. Word has length 49 [2021-11-25 19:14:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:43,699 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 345 transitions. [2021-11-25 19:14:43,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-11-25 19:14:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 345 transitions. [2021-11-25 19:14:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:14:43,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:43,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:43,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:43,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:44,105 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 10765427, now seen corresponding path program 1 times [2021-11-25 19:14:44,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387626245] [2021-11-25 19:14:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:44,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:44,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:44,107 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:44,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-25 19:14:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:44,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:14:44,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:44,507 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 [2021-11-25 19:14:44,513 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 [2021-11-25 19:14:44,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:44,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:14:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:45,252 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:14:45,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:14:45,288 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:14:45,288 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 14 treesize of output 14 [2021-11-25 19:14:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:14:45,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:49,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:49,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387626245] [2021-11-25 19:14:49,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387626245] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:49,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295226262] [2021-11-25 19:14:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:49,240 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:49,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:14:49,240 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:14:49,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-25 19:14:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:50,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:14:50,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:50,082 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 [2021-11-25 19:14:50,088 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 [2021-11-25 19:14:52,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:14:52,790 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:14:52,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:14:52,808 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:14:52,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:14:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:52,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [295226262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:52,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:52,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-25 19:14:52,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839570255] [2021-11-25 19:14:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:52,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:14:52,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:14:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2021-11-25 19:14:52,861 INFO L87 Difference]: Start difference. First operand 315 states and 345 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2021-11-25 19:14:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:53,689 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2021-11-25 19:14:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:14:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 49 [2021-11-25 19:14:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:53,692 INFO L225 Difference]: With dead ends: 380 [2021-11-25 19:14:53,693 INFO L226 Difference]: Without dead ends: 380 [2021-11-25 19:14:53,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2021-11-25 19:14:53,694 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 78 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:53,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 603 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 319 Invalid, 0 Unknown, 208 Unchecked, 0.8s Time] [2021-11-25 19:14:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-25 19:14:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 314. [2021-11-25 19:14:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 254 states have (on average 1.3070866141732282) internal successors, (332), 305 states have internal predecessors, (332), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:14:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 343 transitions. [2021-11-25 19:14:53,704 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 343 transitions. Word has length 49 [2021-11-25 19:14:53,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:53,705 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 343 transitions. [2021-11-25 19:14:53,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2021-11-25 19:14:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 343 transitions. [2021-11-25 19:14:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:14:53,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:53,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:53,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:53,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2021-11-25 19:14:54,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:14:54,120 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -694813700, now seen corresponding path program 1 times [2021-11-25 19:14:54,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:54,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789842264] [2021-11-25 19:14:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:54,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:54,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:54,122 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:54,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-25 19:14:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:54,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:14:54,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:54,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:54,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:54,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789842264] [2021-11-25 19:14:54,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789842264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:54,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:54,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:14:54,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933360981] [2021-11-25 19:14:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:54,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:14:54,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:14:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:14:54,458 INFO L87 Difference]: Start difference. First operand 314 states and 343 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-25 19:14:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:54,786 INFO L93 Difference]: Finished difference Result 313 states and 342 transitions. [2021-11-25 19:14:54,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:14:54,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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 49 [2021-11-25 19:14:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:54,788 INFO L225 Difference]: With dead ends: 313 [2021-11-25 19:14:54,788 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 19:14:54,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:14:54,789 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 140 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:54,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 220 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:14:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 19:14:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-25 19:14:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 254 states have (on average 1.3031496062992125) internal successors, (331), 304 states have internal predecessors, (331), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:14:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 342 transitions. [2021-11-25 19:14:54,799 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 342 transitions. Word has length 49 [2021-11-25 19:14:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:54,799 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 342 transitions. [2021-11-25 19:14:54,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-25 19:14:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 342 transitions. [2021-11-25 19:14:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:14:54,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:54,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:54,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:55,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:55,014 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:55,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -694813699, now seen corresponding path program 1 times [2021-11-25 19:14:55,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:55,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454023335] [2021-11-25 19:14:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:55,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:55,016 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:55,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-25 19:14:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:55,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:14:55,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:55,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:55,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454023335] [2021-11-25 19:14:55,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454023335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:55,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:55,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:14:55,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162588515] [2021-11-25 19:14:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:55,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:14:55,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:14:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:14:55,452 INFO L87 Difference]: Start difference. First operand 313 states and 342 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2021-11-25 19:14:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:55,640 INFO L93 Difference]: Finished difference Result 304 states and 333 transitions. [2021-11-25 19:14:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:14:55,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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 49 [2021-11-25 19:14:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:55,642 INFO L225 Difference]: With dead ends: 304 [2021-11-25 19:14:55,642 INFO L226 Difference]: Without dead ends: 304 [2021-11-25 19:14:55,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:55,644 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 146 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:55,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 248 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:14:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-25 19:14:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-25 19:14:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 254 states have (on average 1.2677165354330708) internal successors, (322), 295 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:14:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 333 transitions. [2021-11-25 19:14:55,652 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 333 transitions. Word has length 49 [2021-11-25 19:14:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:55,653 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 333 transitions. [2021-11-25 19:14:55,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2021-11-25 19:14:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 333 transitions. [2021-11-25 19:14:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:14:55,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:55,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:55,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:55,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:55,860 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -64388068, now seen corresponding path program 1 times [2021-11-25 19:14:55,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:55,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990393537] [2021-11-25 19:14:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:55,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:55,861 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:55,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-25 19:14:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:56,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:14:56,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:56,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:56,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-25 19:14:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:56,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:56,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990393537] [2021-11-25 19:14:56,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990393537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:56,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:14:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408302625] [2021-11-25 19:14:56,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:56,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:14:56,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:14:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:56,348 INFO L87 Difference]: Start difference. First operand 304 states and 333 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-11-25 19:14:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:57,223 INFO L93 Difference]: Finished difference Result 325 states and 355 transitions. [2021-11-25 19:14:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:14:57,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 50 [2021-11-25 19:14:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:57,226 INFO L225 Difference]: With dead ends: 325 [2021-11-25 19:14:57,226 INFO L226 Difference]: Without dead ends: 325 [2021-11-25 19:14:57,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:14:57,227 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 150 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:57,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 364 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:14:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-25 19:14:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 303. [2021-11-25 19:14:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 254 states have (on average 1.263779527559055) internal successors, (321), 294 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:14:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 332 transitions. [2021-11-25 19:14:57,236 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 332 transitions. Word has length 50 [2021-11-25 19:14:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:57,236 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 332 transitions. [2021-11-25 19:14:57,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-11-25 19:14:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 332 transitions. [2021-11-25 19:14:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:14:57,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:57,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:57,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:57,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:57,451 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:57,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash -64388067, now seen corresponding path program 1 times [2021-11-25 19:14:57,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:57,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766044340] [2021-11-25 19:14:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:57,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:57,452 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:57,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-25 19:14:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:57,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:14:57,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:57,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:57,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:14:57,963 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 17 treesize of output 9 [2021-11-25 19:14:57,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:14:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:14:57,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:57,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:14:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766044340] [2021-11-25 19:14:57,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766044340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:57,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:57,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:14:57,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023416865] [2021-11-25 19:14:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:57,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:14:57,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:14:57,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:14:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:57,991 INFO L87 Difference]: Start difference. First operand 303 states and 332 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-11-25 19:14:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:58,656 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2021-11-25 19:14:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:14:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 50 [2021-11-25 19:14:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:58,659 INFO L225 Difference]: With dead ends: 341 [2021-11-25 19:14:58,659 INFO L226 Difference]: Without dead ends: 341 [2021-11-25 19:14:58,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:14:58,660 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 285 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:58,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 315 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:14:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-25 19:14:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 302. [2021-11-25 19:14:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 254 states have (on average 1.2598425196850394) internal successors, (320), 293 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:14:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 331 transitions. [2021-11-25 19:14:58,670 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 331 transitions. Word has length 50 [2021-11-25 19:14:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:58,671 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 331 transitions. [2021-11-25 19:14:58,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-11-25 19:14:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 331 transitions. [2021-11-25 19:14:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 19:14:58,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:58,672 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:58,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-11-25 19:14:58,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:14:58,886 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:14:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643938, now seen corresponding path program 1 times [2021-11-25 19:14:58,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:14:58,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966926095] [2021-11-25 19:14:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:58,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:14:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:14:58,889 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:14:58,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-25 19:14:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:59,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:14:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:59,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:14:59,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:15:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:00,100 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:15:00,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2021-11-25 19:15:00,119 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:15:00,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:15:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:15:00,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:00,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966926095] [2021-11-25 19:15:00,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966926095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [316335398] [2021-11-25 19:15:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:00,882 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:00,883 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:00,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2021-11-25 19:15:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:01,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:15:01,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:01,591 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 [2021-11-25 19:15:01,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:01,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:15:02,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:15:04,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,264 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:15:04,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 22 treesize of output 28 [2021-11-25 19:15:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:04,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:04,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [316335398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:04,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:15:04,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-11-25 19:15:04,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438177884] [2021-11-25 19:15:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:04,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:15:04,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:15:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:15:04,450 INFO L87 Difference]: Start difference. First operand 302 states and 331 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-25 19:15:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:05,189 INFO L93 Difference]: Finished difference Result 320 states and 351 transitions. [2021-11-25 19:15:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:15:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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 51 [2021-11-25 19:15:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:05,191 INFO L225 Difference]: With dead ends: 320 [2021-11-25 19:15:05,192 INFO L226 Difference]: Without dead ends: 320 [2021-11-25 19:15:05,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:15:05,193 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 16 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:05,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 515 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 128 Unchecked, 0.6s Time] [2021-11-25 19:15:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-25 19:15:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 312. [2021-11-25 19:15:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 264 states have (on average 1.2575757575757576) internal successors, (332), 302 states have internal predecessors, (332), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-25 19:15:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 342 transitions. [2021-11-25 19:15:05,202 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 342 transitions. Word has length 51 [2021-11-25 19:15:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:05,202 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 342 transitions. [2021-11-25 19:15:05,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-25 19:15:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 342 transitions. [2021-11-25 19:15:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 19:15:05,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:05,203 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:05,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2021-11-25 19:15:05,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-11-25 19:15:05,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:05,609 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643937, now seen corresponding path program 1 times [2021-11-25 19:15:05,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:05,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935125112] [2021-11-25 19:15:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:05,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:05,611 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:05,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-25 19:15:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:05,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:15:05,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:06,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:15:06,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:15:07,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:07,948 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-25 19:15:07,949 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 4 case distinctions, treesize of input 24 treesize of output 36 [2021-11-25 19:15:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:15:08,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:10,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935125112] [2021-11-25 19:15:10,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935125112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302637786] [2021-11-25 19:15:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:10,306 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:10,311 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:10,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2021-11-25 19:15:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:10,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:15:10,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:11,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-25 19:15:13,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:13,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:13,249 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:15:13,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 29 [2021-11-25 19:15:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:13,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:13,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1302637786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:13,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:15:13,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-11-25 19:15:13,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009753803] [2021-11-25 19:15:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:13,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:15:13,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:15:13,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2021-11-25 19:15:13,374 INFO L87 Difference]: Start difference. First operand 312 states and 342 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-25 19:15:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:14,002 INFO L93 Difference]: Finished difference Result 313 states and 342 transitions. [2021-11-25 19:15:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:15:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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 51 [2021-11-25 19:15:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:14,005 INFO L225 Difference]: With dead ends: 313 [2021-11-25 19:15:14,006 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 19:15:14,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2021-11-25 19:15:14,007 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 13 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:14,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 647 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 137 Unchecked, 0.5s Time] [2021-11-25 19:15:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 19:15:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 302. [2021-11-25 19:15:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 255 states have (on average 1.2588235294117647) internal successors, (321), 293 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:15:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2021-11-25 19:15:14,017 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 51 [2021-11-25 19:15:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:14,018 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2021-11-25 19:15:14,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-25 19:15:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2021-11-25 19:15:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:15:14,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:14,019 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:14,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:14,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:14,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:14,436 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash 94040226, now seen corresponding path program 1 times [2021-11-25 19:15:14,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:14,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950111239] [2021-11-25 19:15:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:14,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:14,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:14,437 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:14,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-25 19:15:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:14,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:15:14,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:14,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:14,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-25 19:15:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:14,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:14,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:14,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950111239] [2021-11-25 19:15:14,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950111239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:14,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:14,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:14,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534662458] [2021-11-25 19:15:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:14,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:15:14,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:15:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:15:14,926 INFO L87 Difference]: Start difference. First operand 302 states and 330 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-11-25 19:15:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:15,538 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2021-11-25 19:15:15,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:15,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 54 [2021-11-25 19:15:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:15,540 INFO L225 Difference]: With dead ends: 324 [2021-11-25 19:15:15,540 INFO L226 Difference]: Without dead ends: 324 [2021-11-25 19:15:15,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:15,540 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 182 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:15,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 332 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:15:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-25 19:15:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 301. [2021-11-25 19:15:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 255 states have (on average 1.2549019607843137) internal successors, (320), 292 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:15:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 329 transitions. [2021-11-25 19:15:15,548 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 329 transitions. Word has length 54 [2021-11-25 19:15:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:15,549 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 329 transitions. [2021-11-25 19:15:15,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-11-25 19:15:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 329 transitions. [2021-11-25 19:15:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:15:15,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:15,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:15,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-11-25 19:15:15,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:15,763 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash 94040227, now seen corresponding path program 1 times [2021-11-25 19:15:15,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:15,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533070750] [2021-11-25 19:15:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:15,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:15,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:15,765 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:15,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-25 19:15:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:16,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:15:16,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:16,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:16,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:16,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:16,316 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 17 treesize of output 9 [2021-11-25 19:15:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:16,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:16,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:16,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533070750] [2021-11-25 19:15:16,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533070750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:16,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:16,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718501026] [2021-11-25 19:15:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:16,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:15:16,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:15:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:15:16,341 INFO L87 Difference]: Start difference. First operand 301 states and 329 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-11-25 19:15:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:17,188 INFO L93 Difference]: Finished difference Result 340 states and 369 transitions. [2021-11-25 19:15:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:17,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 54 [2021-11-25 19:15:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:17,190 INFO L225 Difference]: With dead ends: 340 [2021-11-25 19:15:17,190 INFO L226 Difference]: Without dead ends: 340 [2021-11-25 19:15:17,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:17,191 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 166 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 351 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:15:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-25 19:15:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 300. [2021-11-25 19:15:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 255 states have (on average 1.2509803921568627) internal successors, (319), 291 states have internal predecessors, (319), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:15:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 328 transitions. [2021-11-25 19:15:17,201 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 328 transitions. Word has length 54 [2021-11-25 19:15:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:17,201 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 328 transitions. [2021-11-25 19:15:17,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-11-25 19:15:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 328 transitions. [2021-11-25 19:15:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:15:17,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:17,203 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:17,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:17,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:17,416 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting create_dataErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:17,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576345, now seen corresponding path program 1 times [2021-11-25 19:15:17,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:17,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021557457] [2021-11-25 19:15:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:17,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:17,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:17,418 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:17,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-25 19:15:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:17,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:15:17,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:18,009 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 [2021-11-25 19:15:18,068 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:15:18,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:15:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:18,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:18,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:18,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021557457] [2021-11-25 19:15:18,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021557457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:18,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792649482] [2021-11-25 19:15:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:18,237 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:18,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:18,238 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:18,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2021-11-25 19:15:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:15:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:19,240 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 [2021-11-25 19:15:19,290 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:15:19,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-25 19:15:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:19,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:19,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1792649482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:19,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444037303] [2021-11-25 19:15:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:19,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:19,439 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:19,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-25 19:15:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:19,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:15:19,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:19,874 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:15:19,874 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 21 treesize of output 28 [2021-11-25 19:15:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:19,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:20,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444037303] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:20,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:15:20,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2021-11-25 19:15:20,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019796635] [2021-11-25 19:15:20,006 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:20,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:15:20,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:15:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:15:20,008 INFO L87 Difference]: Start difference. First operand 300 states and 328 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:15:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:20,460 INFO L93 Difference]: Finished difference Result 305 states and 333 transitions. [2021-11-25 19:15:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:15:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-25 19:15:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:20,463 INFO L225 Difference]: With dead ends: 305 [2021-11-25 19:15:20,463 INFO L226 Difference]: Without dead ends: 305 [2021-11-25 19:15:20,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 308 SyntacticMatches, 9 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:15:20,464 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 50 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:20,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 243 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:15:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-25 19:15:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 299. [2021-11-25 19:15:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 255 states have (on average 1.2431372549019608) internal successors, (317), 290 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:15:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 326 transitions. [2021-11-25 19:15:20,474 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 326 transitions. Word has length 54 [2021-11-25 19:15:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:20,474 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 326 transitions. [2021-11-25 19:15:20,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:15:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 326 transitions. [2021-11-25 19:15:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:15:20,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:20,476 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:20,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2021-11-25 19:15:20,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-11-25 19:15:20,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-11-25 19:15:21,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:21,083 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting create_dataErr27REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576346, now seen corresponding path program 1 times [2021-11-25 19:15:21,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850459925] [2021-11-25 19:15:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:21,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:21,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:21,085 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:21,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-11-25 19:15:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:21,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:15:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:21,843 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 [2021-11-25 19:15:21,965 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:15:21,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:15:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:21,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:22,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850459925] [2021-11-25 19:15:22,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850459925] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641899570] [2021-11-25 19:15:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:22,469 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:22,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:22,474 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:22,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2021-11-25 19:15:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:23,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:15:23,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:23,662 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 [2021-11-25 19:15:23,671 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 [2021-11-25 19:15:23,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:23,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:15:23,891 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:15:23,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:15:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:23,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:26,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641899570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:26,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488684397] [2021-11-25 19:15:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:26,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:26,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:26,124 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:26,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-25 19:15:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:26,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:15:26,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:26,541 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 [2021-11-25 19:15:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:26,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:15:26,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:15:26,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:26,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:27,190 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:15:27,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:15:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:29,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488684397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:29,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:15:29,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4, 4, 5, 5] total 11 [2021-11-25 19:15:29,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474788172] [2021-11-25 19:15:29,380 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:29,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:15:29,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:29,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:15:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-11-25 19:15:29,382 INFO L87 Difference]: Start difference. First operand 299 states and 326 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:15:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:30,244 INFO L93 Difference]: Finished difference Result 301 states and 325 transitions. [2021-11-25 19:15:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:15:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-25 19:15:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:30,252 INFO L225 Difference]: With dead ends: 301 [2021-11-25 19:15:30,252 INFO L226 Difference]: Without dead ends: 301 [2021-11-25 19:15:30,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=58, Invalid=123, Unknown=1, NotChecked=0, Total=182 [2021-11-25 19:15:30,253 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 128 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:30,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 639 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 190 Unchecked, 0.8s Time] [2021-11-25 19:15:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-25 19:15:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 279. [2021-11-25 19:15:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 239 states have (on average 1.217573221757322) internal successors, (291), 270 states have internal predecessors, (291), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:15:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 300 transitions. [2021-11-25 19:15:30,261 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 300 transitions. Word has length 54 [2021-11-25 19:15:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:30,261 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 300 transitions. [2021-11-25 19:15:30,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:15:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 300 transitions. [2021-11-25 19:15:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:15:30,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:30,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:30,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:30,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-11-25 19:15:30,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (58)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:30,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:30,882 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1379720125, now seen corresponding path program 1 times [2021-11-25 19:15:30,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:30,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447377557] [2021-11-25 19:15:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:30,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:30,884 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:30,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-11-25 19:15:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:31,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:15:31,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:31,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:31,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:31,758 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 19:15:31,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2021-11-25 19:15:32,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:15:32,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:32,082 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 44 treesize of output 35 [2021-11-25 19:15:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:15:32,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:32,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:32,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447377557] [2021-11-25 19:15:32,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447377557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:32,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:32,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:15:32,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29737192] [2021-11-25 19:15:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:32,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:15:32,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:15:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:15:32,125 INFO L87 Difference]: Start difference. First operand 279 states and 300 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-11-25 19:15:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:33,136 INFO L93 Difference]: Finished difference Result 334 states and 367 transitions. [2021-11-25 19:15:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:15:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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 55 [2021-11-25 19:15:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:33,140 INFO L225 Difference]: With dead ends: 334 [2021-11-25 19:15:33,140 INFO L226 Difference]: Without dead ends: 334 [2021-11-25 19:15:33,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:15:33,141 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 98 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:33,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 611 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 412 Invalid, 0 Unknown, 111 Unchecked, 0.9s Time] [2021-11-25 19:15:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-25 19:15:33,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 300. [2021-11-25 19:15:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 259 states have (on average 1.2316602316602316) internal successors, (319), 289 states have internal predecessors, (319), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:15:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 331 transitions. [2021-11-25 19:15:33,150 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 331 transitions. Word has length 55 [2021-11-25 19:15:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:33,150 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 331 transitions. [2021-11-25 19:15:33,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-11-25 19:15:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 331 transitions. [2021-11-25 19:15:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:15:33,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:33,151 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:33,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:33,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:33,366 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1379720124, now seen corresponding path program 1 times [2021-11-25 19:15:33,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:33,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718124832] [2021-11-25 19:15:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:33,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:33,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:33,368 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:33,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-11-25 19:15:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:33,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:15:33,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:33,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:15:33,886 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:15:33,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:15:34,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:34,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:15:34,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:15:34,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-25 19:15:34,609 INFO L354 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2021-11-25 19:15:34,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-11-25 19:15:34,622 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:15:34,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-11-25 19:15:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:34,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:34,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:34,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718124832] [2021-11-25 19:15:34,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718124832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:34,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:34,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:15:34,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543878488] [2021-11-25 19:15:34,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:34,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:15:34,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:15:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:15:34,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:15:34,665 INFO L87 Difference]: Start difference. First operand 300 states and 331 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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) [2021-11-25 19:15:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:36,919 INFO L93 Difference]: Finished difference Result 500 states and 549 transitions. [2021-11-25 19:15:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:15:36,920 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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 55 [2021-11-25 19:15:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:36,922 INFO L225 Difference]: With dead ends: 500 [2021-11-25 19:15:36,922 INFO L226 Difference]: Without dead ends: 500 [2021-11-25 19:15:36,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:15:36,922 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 454 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:36,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 687 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 640 Invalid, 0 Unknown, 148 Unchecked, 1.8s Time] [2021-11-25 19:15:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-25 19:15:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 321. [2021-11-25 19:15:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 279 states have (on average 1.2401433691756272) internal successors, (346), 308 states have internal predecessors, (346), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-25 19:15:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 361 transitions. [2021-11-25 19:15:36,932 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 361 transitions. Word has length 55 [2021-11-25 19:15:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:36,932 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 361 transitions. [2021-11-25 19:15:36,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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) [2021-11-25 19:15:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 361 transitions. [2021-11-25 19:15:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 19:15:36,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:36,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:36,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:37,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:15:37,148 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:15:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -266687074, now seen corresponding path program 1 times [2021-11-25 19:15:37,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:15:37,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968887886] [2021-11-25 19:15:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:37,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:15:37,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:15:37,150 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:15:37,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-11-25 19:15:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:37,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:15:37,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:37,941 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 [2021-11-25 19:15:42,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:42,437 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-11-25 19:15:42,437 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 8 case distinctions, treesize of input 53 treesize of output 76 [2021-11-25 19:15:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:42,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:45,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:15:45,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968887886] [2021-11-25 19:15:45,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968887886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:45,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2061106319] [2021-11-25 19:15:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:45,060 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:15:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:15:45,060 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:15:45,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2021-11-25 19:15:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:46,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:15:46,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:46,175 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 [2021-11-25 19:15:58,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:58,105 INFO L354 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2021-11-25 19:15:58,106 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 5 case distinctions, treesize of input 43 treesize of output 68 [2021-11-25 19:15:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:15:58,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:04,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2061106319] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:04,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:16:04,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 15 [2021-11-25 19:16:04,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281210371] [2021-11-25 19:16:04,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:04,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:16:04,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:16:04,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=191, Unknown=6, NotChecked=0, Total=272 [2021-11-25 19:16:04,636 INFO L87 Difference]: Start difference. First operand 321 states and 361 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-25 19:16:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:04,826 INFO L93 Difference]: Finished difference Result 375 states and 426 transitions. [2021-11-25 19:16:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:16:04,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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 56 [2021-11-25 19:16:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:04,834 INFO L225 Difference]: With dead ends: 375 [2021-11-25 19:16:04,834 INFO L226 Difference]: Without dead ends: 375 [2021-11-25 19:16:04,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=75, Invalid=191, Unknown=6, NotChecked=0, Total=272 [2021-11-25 19:16:04,835 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 72 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:04,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 287 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 150 Unchecked, 0.2s Time] [2021-11-25 19:16:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-25 19:16:04,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 346. [2021-11-25 19:16:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 303 states have (on average 1.2409240924092408) internal successors, (376), 330 states have internal predecessors, (376), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (14), 12 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-25 19:16:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 395 transitions. [2021-11-25 19:16:04,845 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 395 transitions. Word has length 56 [2021-11-25 19:16:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:04,845 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 395 transitions. [2021-11-25 19:16:04,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-25 19:16:04,845 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 395 transitions. [2021-11-25 19:16:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 19:16:04,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:04,846 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:04,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:05,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-11-25 19:16:05,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:05,253 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:05,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash -266687073, now seen corresponding path program 1 times [2021-11-25 19:16:05,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:05,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031507188] [2021-11-25 19:16:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:05,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:05,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:05,256 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:05,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-11-25 19:16:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 19:16:06,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:06,014 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 [2021-11-25 19:16:06,022 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 [2021-11-25 19:16:11,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:11,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:11,829 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:16:11,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:16:11,876 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:16:11,876 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 40 treesize of output 42 [2021-11-25 19:16:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:12,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:12,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:12,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031507188] [2021-11-25 19:16:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031507188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [33839193] [2021-11-25 19:16:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:12,460 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:16:12,461 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:16:12,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2021-11-25 19:16:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:13,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:16:13,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:13,820 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 [2021-11-25 19:16:13,826 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 [2021-11-25 19:16:19,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:19,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:19,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:19,967 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:16:19,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:16:20,016 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:16:20,016 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 51 [2021-11-25 19:16:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:20,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:20,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [33839193] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:20,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021148422] [2021-11-25 19:16:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:20,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:16:20,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:16:20,627 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:16:20,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-25 19:16:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:21,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:16:21,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:21,080 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 [2021-11-25 19:16:27,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:27,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:27,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:27,227 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:16:27,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:16:27,277 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:16:27,277 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 41 treesize of output 43 [2021-11-25 19:16:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:27,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:27,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021148422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:27,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:16:27,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-11-25 19:16:27,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355410501] [2021-11-25 19:16:27,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:16:27,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:16:27,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:27,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:16:27,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=104, Unknown=1, NotChecked=0, Total=132 [2021-11-25 19:16:27,955 INFO L87 Difference]: Start difference. First operand 346 states and 395 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2021-11-25 19:16:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:28,845 INFO L93 Difference]: Finished difference Result 477 states and 538 transitions. [2021-11-25 19:16:28,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:16:28,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 56 [2021-11-25 19:16:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:28,848 INFO L225 Difference]: With dead ends: 477 [2021-11-25 19:16:28,849 INFO L226 Difference]: Without dead ends: 477 [2021-11-25 19:16:28,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-11-25 19:16:28,849 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 116 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:28,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 955 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 212 Unchecked, 0.8s Time] [2021-11-25 19:16:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-25 19:16:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 360. [2021-11-25 19:16:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 344 states have internal predecessors, (390), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 12 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:16:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 413 transitions. [2021-11-25 19:16:28,862 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 413 transitions. Word has length 56 [2021-11-25 19:16:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:28,863 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 413 transitions. [2021-11-25 19:16:28,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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) [2021-11-25 19:16:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 413 transitions. [2021-11-25 19:16:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 19:16:28,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:28,864 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:28,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:29,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (65)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:29,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:29,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:29,477 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash 644821436, now seen corresponding path program 1 times [2021-11-25 19:16:29,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:29,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337138035] [2021-11-25 19:16:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:29,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:29,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:29,480 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:29,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-11-25 19:16:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:30,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:16:30,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:30,065 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 [2021-11-25 19:16:30,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:16:30,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:16:32,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:16:32,596 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-25 19:16:32,596 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 4 case distinctions, treesize of input 24 treesize of output 36 [2021-11-25 19:16:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:32,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:36,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:36,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337138035] [2021-11-25 19:16:36,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337138035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:36,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128175394] [2021-11-25 19:16:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:36,829 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:16:36,831 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:16:36,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2021-11-25 19:16:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:37,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:16:37,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:37,725 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 [2021-11-25 19:16:40,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:16:40,617 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-11-25 19:16:40,617 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 2 case distinctions, treesize of input 18 treesize of output 32 [2021-11-25 19:16:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:16:40,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:40,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128175394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:40,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:16:40,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2021-11-25 19:16:40,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966064135] [2021-11-25 19:16:40,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:40,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:16:40,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:40,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:16:40,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=78, Unknown=3, NotChecked=0, Total=110 [2021-11-25 19:16:40,649 INFO L87 Difference]: Start difference. First operand 360 states and 413 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-11-25 19:16:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:41,002 INFO L93 Difference]: Finished difference Result 397 states and 458 transitions. [2021-11-25 19:16:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:16:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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 57 [2021-11-25 19:16:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:41,004 INFO L225 Difference]: With dead ends: 397 [2021-11-25 19:16:41,004 INFO L226 Difference]: Without dead ends: 397 [2021-11-25 19:16:41,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=29, Invalid=78, Unknown=3, NotChecked=0, Total=110 [2021-11-25 19:16:41,005 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 60 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:41,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 323 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 134 Unchecked, 0.3s Time] [2021-11-25 19:16:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-25 19:16:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 361. [2021-11-25 19:16:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 317 states have (on average 1.2365930599369086) internal successors, (392), 345 states have internal predecessors, (392), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 12 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:16:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 415 transitions. [2021-11-25 19:16:41,017 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 415 transitions. Word has length 57 [2021-11-25 19:16:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:41,018 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 415 transitions. [2021-11-25 19:16:41,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-11-25 19:16:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 415 transitions. [2021-11-25 19:16:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 19:16:41,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:41,020 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:41,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:41,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:41,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:41,442 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash 644821437, now seen corresponding path program 1 times [2021-11-25 19:16:41,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966540210] [2021-11-25 19:16:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:41,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:41,467 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:41,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-11-25 19:16:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:16:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:42,268 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 [2021-11-25 19:16:42,274 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 [2021-11-25 19:16:42,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:16:42,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:16:43,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:43,168 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:16:43,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:16:43,187 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:16:43,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:16:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:43,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:43,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:43,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966540210] [2021-11-25 19:16:43,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966540210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:43,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1551923976] [2021-11-25 19:16:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:43,706 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:43,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:16:43,707 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:16:43,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2021-11-25 19:16:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:44,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:16:44,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:44,811 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 [2021-11-25 19:16:44,821 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 [2021-11-25 19:16:45,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:45,687 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:16:45,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:16:45,706 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:16:45,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:16:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:16:45,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:45,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1551923976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:45,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:16:45,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-25 19:16:45,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420695633] [2021-11-25 19:16:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:45,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:16:45,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:16:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:16:45,758 INFO L87 Difference]: Start difference. First operand 361 states and 415 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-11-25 19:16:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:46,386 INFO L93 Difference]: Finished difference Result 417 states and 479 transitions. [2021-11-25 19:16:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:16:46,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 57 [2021-11-25 19:16:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:46,390 INFO L225 Difference]: With dead ends: 417 [2021-11-25 19:16:46,391 INFO L226 Difference]: Without dead ends: 417 [2021-11-25 19:16:46,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:16:46,391 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 63 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:46,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 552 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 149 Unchecked, 0.6s Time] [2021-11-25 19:16:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-25 19:16:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 361. [2021-11-25 19:16:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 317 states have (on average 1.2365930599369086) internal successors, (392), 345 states have internal predecessors, (392), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 12 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:16:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 415 transitions. [2021-11-25 19:16:46,402 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 415 transitions. Word has length 57 [2021-11-25 19:16:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:46,402 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 415 transitions. [2021-11-25 19:16:46,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-11-25 19:16:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 415 transitions. [2021-11-25 19:16:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:16:46,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:46,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:46,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:46,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (70)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:46,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:46,829 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2040782741, now seen corresponding path program 1 times [2021-11-25 19:16:46,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:46,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890527113] [2021-11-25 19:16:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:46,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:46,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:46,831 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:46,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-11-25 19:16:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:47,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:16:47,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:47,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:16:47,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-25 19:16:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:47,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:47,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:47,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890527113] [2021-11-25 19:16:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890527113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:47,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:47,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:16:47,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257619192] [2021-11-25 19:16:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:47,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:16:47,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:16:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:47,485 INFO L87 Difference]: Start difference. First operand 361 states and 415 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-25 19:16:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:47,893 INFO L93 Difference]: Finished difference Result 399 states and 453 transitions. [2021-11-25 19:16:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:16:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 58 [2021-11-25 19:16:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:47,896 INFO L225 Difference]: With dead ends: 399 [2021-11-25 19:16:47,896 INFO L226 Difference]: Without dead ends: 399 [2021-11-25 19:16:47,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:16:47,897 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 149 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:47,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 357 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:16:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-25 19:16:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 363. [2021-11-25 19:16:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 319 states have (on average 1.2351097178683386) internal successors, (394), 347 states have internal predecessors, (394), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 12 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:16:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 417 transitions. [2021-11-25 19:16:47,908 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 417 transitions. Word has length 58 [2021-11-25 19:16:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:47,908 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 417 transitions. [2021-11-25 19:16:47,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-25 19:16:47,909 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 417 transitions. [2021-11-25 19:16:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:16:47,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:47,910 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:47,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:48,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:48,125 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:48,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2040783193, now seen corresponding path program 1 times [2021-11-25 19:16:48,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:48,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57094205] [2021-11-25 19:16:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:48,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:48,127 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:48,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-11-25 19:16:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:48,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:16:48,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:48,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:16:48,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-25 19:16:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:48,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:48,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:48,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57094205] [2021-11-25 19:16:48,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57094205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:48,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:48,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:16:48,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212756957] [2021-11-25 19:16:48,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:48,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:16:48,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:16:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:16:48,812 INFO L87 Difference]: Start difference. First operand 363 states and 417 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-11-25 19:16:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:49,570 INFO L93 Difference]: Finished difference Result 381 states and 435 transitions. [2021-11-25 19:16:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:16:49,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 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 58 [2021-11-25 19:16:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:49,573 INFO L225 Difference]: With dead ends: 381 [2021-11-25 19:16:49,573 INFO L226 Difference]: Without dead ends: 381 [2021-11-25 19:16:49,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:16:49,574 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 121 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:49,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 345 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:16:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-25 19:16:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 365. [2021-11-25 19:16:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 321 states have (on average 1.236760124610592) internal successors, (397), 349 states have internal predecessors, (397), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 12 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-25 19:16:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 420 transitions. [2021-11-25 19:16:49,585 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 420 transitions. Word has length 58 [2021-11-25 19:16:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:49,585 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 420 transitions. [2021-11-25 19:16:49,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-11-25 19:16:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 420 transitions. [2021-11-25 19:16:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:16:49,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:49,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:49,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-11-25 19:16:49,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:49,803 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:49,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2040783194, now seen corresponding path program 1 times [2021-11-25 19:16:49,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:49,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82470819] [2021-11-25 19:16:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:49,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:49,805 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:49,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-11-25 19:16:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:50,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:16:50,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:50,457 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 [2021-11-25 19:16:50,468 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 [2021-11-25 19:16:50,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:16:50,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:16:51,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:51,246 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:16:51,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:16:51,269 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:16:51,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:16:51,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:16:51,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:16:51,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:16:51,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:16:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:16:51,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:52,212 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 40 treesize of output 32 [2021-11-25 19:16:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:54,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82470819] [2021-11-25 19:16:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82470819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485292870] [2021-11-25 19:16:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:54,708 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:16:54,709 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:16:54,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2021-11-25 19:16:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:55,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 19:16:55,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:56,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:16:56,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:16:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:56,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-25 19:16:56,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:16:56,942 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:16:56,943 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 31 treesize of output 14 [2021-11-25 19:16:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:16:57,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:57,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [485292870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:57,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:16:57,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 21 [2021-11-25 19:16:57,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875352197] [2021-11-25 19:16:57,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:57,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:16:57,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:57,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:16:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=543, Unknown=1, NotChecked=0, Total=600 [2021-11-25 19:16:57,112 INFO L87 Difference]: Start difference. First operand 365 states and 420 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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) [2021-11-25 19:16:57,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:57,952 INFO L93 Difference]: Finished difference Result 385 states and 436 transitions. [2021-11-25 19:16:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 19:16:57,952 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 58 [2021-11-25 19:16:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:57,954 INFO L225 Difference]: With dead ends: 385 [2021-11-25 19:16:57,954 INFO L226 Difference]: Without dead ends: 385 [2021-11-25 19:16:57,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=79, Invalid=790, Unknown=1, NotChecked=0, Total=870 [2021-11-25 19:16:57,955 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 66 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:57,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1197 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 201 Unchecked, 0.5s Time] [2021-11-25 19:16:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-25 19:16:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 356. [2021-11-25 19:16:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 313 states have (on average 1.233226837060703) internal successors, (386), 340 states have internal predecessors, (386), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (14), 12 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 19:16:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 404 transitions. [2021-11-25 19:16:57,965 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 404 transitions. Word has length 58 [2021-11-25 19:16:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:57,965 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 404 transitions. [2021-11-25 19:16:57,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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) [2021-11-25 19:16:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 404 transitions. [2021-11-25 19:16:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:16:57,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:57,967 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:57,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:58,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (74)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:58,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:58,384 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:16:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1411763790, now seen corresponding path program 1 times [2021-11-25 19:16:58,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:58,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908501550] [2021-11-25 19:16:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:58,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:58,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:58,386 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:58,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-11-25 19:16:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:59,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-25 19:16:59,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:59,202 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 [2021-11-25 19:16:59,211 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 [2021-11-25 19:16:59,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:59,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:16:59,270 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:16:59,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:16:59,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:16:59,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-25 19:16:59,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:16:59,917 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:16:59,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 54 [2021-11-25 19:17:00,166 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:17:00,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2021-11-25 19:17:00,310 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 42 treesize of output 24 [2021-11-25 19:17:03,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:03,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:03,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:03,354 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:17:03,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:17:03,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:03,408 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-25 19:17:03,408 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 44 treesize of output 42 [2021-11-25 19:17:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:17:03,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:17:04,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:17:04,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908501550] [2021-11-25 19:17:04,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908501550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:17:04,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [566881466] [2021-11-25 19:17:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:04,562 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:17:04,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:17:04,563 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:17:04,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2021-11-25 19:17:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:05,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:17:05,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:17:05,831 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 [2021-11-25 19:17:05,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:05,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:17:06,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:17:15,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:15,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:15,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:15,121 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-11-25 19:17:15,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2021-11-25 19:17:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:17:15,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:17:20,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [566881466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:17:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177892055] [2021-11-25 19:17:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:20,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:17:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:17:20,224 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:17:20,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-25 19:17:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:20,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:17:20,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:17:20,792 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 [2021-11-25 19:17:20,802 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 [2021-11-25 19:17:20,937 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:17:20,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-25 19:17:20,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:17:21,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:17:22,086 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:17:22,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 48 [2021-11-25 19:17:22,300 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 33 treesize of output 21 [2021-11-25 19:17:36,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:36,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:36,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:36,293 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:17:36,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:17:36,381 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-25 19:17:36,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 59 [2021-11-25 19:17:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:17:36,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:17:39,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177892055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:17:39,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:17:39,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 28 [2021-11-25 19:17:39,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069469625] [2021-11-25 19:17:39,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:17:39,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-25 19:17:39,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:17:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-25 19:17:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=940, Unknown=7, NotChecked=0, Total=1056 [2021-11-25 19:17:39,345 INFO L87 Difference]: Start difference. First operand 356 states and 404 transitions. Second operand has 29 states, 28 states have (on average 5.214285714285714) internal successors, (146), 29 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:17:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:17:50,630 INFO L93 Difference]: Finished difference Result 409 states and 463 transitions. [2021-11-25 19:17:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 19:17:50,631 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.214285714285714) internal successors, (146), 29 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-11-25 19:17:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:17:50,634 INFO L225 Difference]: With dead ends: 409 [2021-11-25 19:17:50,634 INFO L226 Difference]: Without dead ends: 409 [2021-11-25 19:17:50,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=203, Invalid=1593, Unknown=10, NotChecked=0, Total=1806 [2021-11-25 19:17:50,636 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 49 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 643 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:17:50,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1547 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 358 Invalid, 0 Unknown, 643 Unchecked, 0.8s Time] [2021-11-25 19:17:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-25 19:17:50,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 373. [2021-11-25 19:17:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 329 states have (on average 1.2279635258358663) internal successors, (404), 356 states have internal predecessors, (404), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (15), 13 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 19:17:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 423 transitions. [2021-11-25 19:17:50,645 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 423 transitions. Word has length 58 [2021-11-25 19:17:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:50,646 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 423 transitions. [2021-11-25 19:17:50,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.214285714285714) internal successors, (146), 29 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:17:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 423 transitions. [2021-11-25 19:17:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:17:50,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:50,647 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:17:50,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-11-25 19:17:50,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-11-25 19:17:51,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (76)] Forceful destruction successful, exit code 0 [2021-11-25 19:17:51,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:17:51,276 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:17:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1411763789, now seen corresponding path program 1 times [2021-11-25 19:17:51,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:17:51,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738233477] [2021-11-25 19:17:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:51,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:17:51,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:17:51,278 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:17:51,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-11-25 19:17:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:52,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:17:52,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:17:52,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-25 19:17:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:17:55,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:17:55,687 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-25 19:17:55,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 52 [2021-11-25 19:17:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:17:56,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:17:58,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:17:58,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738233477] [2021-11-25 19:17:58,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738233477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:17:58,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [803884871] [2021-11-25 19:17:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:58,770 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:17:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:17:58,771 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:17:58,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2021-11-25 19:18:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:00,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:18:00,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:18:00,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-25 19:18:03,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:18:03,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:18:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:18:03,418 INFO L354 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-11-25 19:18:03,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 44 [2021-11-25 19:18:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:18:04,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:18:06,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [803884871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:18:06,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223357210] [2021-11-25 19:18:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:06,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:18:06,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:18:06,381 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:18:06,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-25 19:18:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:06,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:18:06,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:18:06,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:18:07,061 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:18:07,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-25 19:18:07,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:18:07,647 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:18:07,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:18:07,832 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:18:07,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 47 [2021-11-25 19:18:08,049 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 33 treesize of output 21 [2021-11-25 19:18:24,798 INFO L354 Elim1Store]: treesize reduction 110, result has 29.9 percent of original size [2021-11-25 19:18:24,798 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 11 case distinctions, treesize of input 189 treesize of output 218 [2021-11-25 19:18:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:18:25,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:18:30,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223357210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:18:30,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:18:30,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10] total 19 [2021-11-25 19:18:30,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987692280] [2021-11-25 19:18:30,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:18:30,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:18:30,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:18:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:18:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=436, Unknown=10, NotChecked=0, Total=506 [2021-11-25 19:18:30,687 INFO L87 Difference]: Start difference. First operand 373 states and 423 transitions. Second operand has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:18:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:18:57,371 INFO L93 Difference]: Finished difference Result 418 states and 473 transitions. [2021-11-25 19:18:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:18:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2021-11-25 19:18:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:18:57,375 INFO L225 Difference]: With dead ends: 418 [2021-11-25 19:18:57,375 INFO L226 Difference]: Without dead ends: 418 [2021-11-25 19:18:57,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=128, Invalid=846, Unknown=18, NotChecked=0, Total=992 [2021-11-25 19:18:57,376 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 134 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 560 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:18:57,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1217 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 358 Invalid, 0 Unknown, 560 Unchecked, 0.7s Time] [2021-11-25 19:18:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-25 19:18:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 377. [2021-11-25 19:18:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 333 states have (on average 1.2282282282282282) internal successors, (409), 359 states have internal predecessors, (409), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:18:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 429 transitions. [2021-11-25 19:18:57,387 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 429 transitions. Word has length 58 [2021-11-25 19:18:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:18:57,387 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 429 transitions. [2021-11-25 19:18:57,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:18:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 429 transitions. [2021-11-25 19:18:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:18:57,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:18:57,389 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:18:57,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-11-25 19:18:57,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-25 19:18:57,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (79)] Ended with exit code 0 [2021-11-25 19:18:57,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:18:57,996 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:18:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:18:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1198113516, now seen corresponding path program 1 times [2021-11-25 19:18:57,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:18:57,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666761615] [2021-11-25 19:18:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:57,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:18:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:18:57,998 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:18:58,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-11-25 19:18:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:58,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:18:58,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:18:58,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:18:58,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:18:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:18:59,498 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:18:59,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2021-11-25 19:18:59,517 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:18:59,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:18:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:18:59,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:01,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:19:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666761615] [2021-11-25 19:19:01,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666761615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1240726670] [2021-11-25 19:19:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:01,995 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:19:01,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:19:01,996 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:19:01,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2021-11-25 19:19:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:03,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:19:03,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:03,014 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 [2021-11-25 19:19:03,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:03,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:19:03,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:19:06,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:06,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:06,452 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:19:06,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 22 treesize of output 28 [2021-11-25 19:19:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:19:06,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:06,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1240726670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:06,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:06,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-11-25 19:19:06,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993858513] [2021-11-25 19:19:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:06,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:19:06,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:19:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:19:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2021-11-25 19:19:06,658 INFO L87 Difference]: Start difference. First operand 377 states and 429 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-11-25 19:19:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:07,695 INFO L93 Difference]: Finished difference Result 407 states and 463 transitions. [2021-11-25 19:19:07,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:19:07,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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 59 [2021-11-25 19:19:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:07,698 INFO L225 Difference]: With dead ends: 407 [2021-11-25 19:19:07,698 INFO L226 Difference]: Without dead ends: 407 [2021-11-25 19:19:07,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2021-11-25 19:19:07,699 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:07,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 572 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 114 Unchecked, 0.9s Time] [2021-11-25 19:19:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-25 19:19:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 391. [2021-11-25 19:19:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 347 states have (on average 1.2276657060518732) internal successors, (426), 373 states have internal predecessors, (426), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (14), 14 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 19:19:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 444 transitions. [2021-11-25 19:19:07,709 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 444 transitions. Word has length 59 [2021-11-25 19:19:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:07,709 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 444 transitions. [2021-11-25 19:19:07,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-11-25 19:19:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 444 transitions. [2021-11-25 19:19:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:19:07,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:07,711 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:19:07,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:07,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (82)] Ended with exit code 0 [2021-11-25 19:19:08,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:19:08,120 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:19:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1198113515, now seen corresponding path program 1 times [2021-11-25 19:19:08,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:19:08,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692813606] [2021-11-25 19:19:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:08,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:19:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:19:08,122 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:19:08,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-11-25 19:19:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:08,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:19:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:08,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:19:09,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:19:11,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:19:11,402 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-25 19:19:11,403 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 4 case distinctions, treesize of input 24 treesize of output 36 [2021-11-25 19:19:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:19:11,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:13,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:19:13,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692813606] [2021-11-25 19:19:13,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692813606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:13,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [116123521] [2021-11-25 19:19:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:13,732 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:19:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:19:13,734 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:19:13,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2021-11-25 19:19:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:14,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:19:14,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:14,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-25 19:19:17,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:17,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:17,508 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 19:19:17,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 30 [2021-11-25 19:19:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:19:17,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:17,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [116123521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:17,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:17,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-11-25 19:19:17,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86869348] [2021-11-25 19:19:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:17,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:19:17,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:19:17,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:19:17,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2021-11-25 19:19:17,640 INFO L87 Difference]: Start difference. First operand 391 states and 444 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-11-25 19:19:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:18,155 INFO L93 Difference]: Finished difference Result 397 states and 449 transitions. [2021-11-25 19:19:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:19:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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 59 [2021-11-25 19:19:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:18,166 INFO L225 Difference]: With dead ends: 397 [2021-11-25 19:19:18,167 INFO L226 Difference]: Without dead ends: 397 [2021-11-25 19:19:18,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2021-11-25 19:19:18,168 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 10 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:18,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 603 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 134 Unchecked, 0.4s Time] [2021-11-25 19:19:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-25 19:19:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 378. [2021-11-25 19:19:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 335 states have (on average 1.226865671641791) internal successors, (411), 361 states have internal predecessors, (411), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 19:19:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 428 transitions. [2021-11-25 19:19:18,177 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 428 transitions. Word has length 59 [2021-11-25 19:19:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:18,177 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 428 transitions. [2021-11-25 19:19:18,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-11-25 19:19:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 428 transitions. [2021-11-25 19:19:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 19:19:18,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:18,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:19:18,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (84)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:18,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:18,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:19:18,592 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:19:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1950696328, now seen corresponding path program 1 times [2021-11-25 19:19:18,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:19:18,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973882989] [2021-11-25 19:19:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:18,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:19:18,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:19:18,595 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:19:18,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-11-25 19:19:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:19,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:19:19,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:19,491 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 [2021-11-25 19:19:24,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:19:24,360 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-11-25 19:19:24,360 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 8 case distinctions, treesize of input 56 treesize of output 79 [2021-11-25 19:19:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:19:24,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:28,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:19:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973882989] [2021-11-25 19:19:28,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973882989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [338522493] [2021-11-25 19:19:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:28,994 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:19:28,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:19:28,995 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:19:28,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (86)] Waiting until timeout for monitored process [2021-11-25 19:19:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:30,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 19:19:30,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:30,254 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 [2021-11-25 19:19:51,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:19:51,993 INFO L354 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2021-11-25 19:19:51,994 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 5 case distinctions, treesize of input 43 treesize of output 68 [2021-11-25 19:19:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:19:52,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:19:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [338522493] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:56,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:19:56,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 8] total 15 [2021-11-25 19:19:56,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156837769] [2021-11-25 19:19:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:19:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:19:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:19:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=195, Unknown=8, NotChecked=0, Total=272 [2021-11-25 19:19:56,170 INFO L87 Difference]: Start difference. First operand 378 states and 428 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-11-25 19:19:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:56,365 INFO L93 Difference]: Finished difference Result 438 states and 497 transitions. [2021-11-25 19:19:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:19:56,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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 60 [2021-11-25 19:19:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:56,368 INFO L225 Difference]: With dead ends: 438 [2021-11-25 19:19:56,368 INFO L226 Difference]: Without dead ends: 438 [2021-11-25 19:19:56,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=69, Invalid=195, Unknown=8, NotChecked=0, Total=272 [2021-11-25 19:19:56,369 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 67 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:56,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 303 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 76 Unchecked, 0.2s Time] [2021-11-25 19:19:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-25 19:19:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 391. [2021-11-25 19:19:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 348 states have (on average 1.2270114942528736) internal successors, (427), 374 states have internal predecessors, (427), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 19:19:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 444 transitions. [2021-11-25 19:19:56,379 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 444 transitions. Word has length 60 [2021-11-25 19:19:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:56,383 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 444 transitions. [2021-11-25 19:19:56,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-11-25 19:19:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 444 transitions. [2021-11-25 19:19:56,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 19:19:56,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:56,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:19:56,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:56,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (86)] Forceful destruction successful, exit code 0 [2021-11-25 19:19:56,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:19:56,800 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:19:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1950696327, now seen corresponding path program 1 times [2021-11-25 19:19:56,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:19:56,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034497017] [2021-11-25 19:19:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:56,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:19:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:19:56,802 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:19:56,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-11-25 19:19:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:57,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 19:19:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:57,733 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 [2021-11-25 19:19:57,740 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 [2021-11-25 19:20:04,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:04,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:04,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:04,536 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:20:04,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:20:04,587 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:20:04,588 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 41 treesize of output 43 [2021-11-25 19:20:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:20:04,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:05,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:20:05,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034497017] [2021-11-25 19:20:05,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034497017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:20:05,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1412798488] [2021-11-25 19:20:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:05,240 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:20:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:20:05,241 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:20:05,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (88)] Waiting until timeout for monitored process [2021-11-25 19:20:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:06,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:20:06,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:06,785 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 [2021-11-25 19:20:06,792 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 [2021-11-25 19:20:11,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:11,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:11,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:11,509 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:20:11,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:20:11,560 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:20:11,560 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 39 treesize of output 41 [2021-11-25 19:20:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:20:11,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:12,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1412798488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:20:12,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989126354] [2021-11-25 19:20:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:12,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:20:12,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:20:12,188 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:20:12,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-25 19:20:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:12,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:20:12,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:12,775 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 [2021-11-25 19:20:19,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:19,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:19,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:19,465 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:20:19,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:20:19,520 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:20:19,520 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 38 treesize of output 40 [2021-11-25 19:20:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:20:19,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:20,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989126354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:20:20,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:20:20,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 10 [2021-11-25 19:20:20,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437580742] [2021-11-25 19:20:20,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:20:20,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:20:20,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:20:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:20:20,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=125, Unknown=1, NotChecked=0, Total=156 [2021-11-25 19:20:20,169 INFO L87 Difference]: Start difference. First operand 391 states and 444 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2021-11-25 19:20:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:20,843 INFO L93 Difference]: Finished difference Result 529 states and 593 transitions. [2021-11-25 19:20:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:20:20,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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 60 [2021-11-25 19:20:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:20,846 INFO L225 Difference]: With dead ends: 529 [2021-11-25 19:20:20,846 INFO L226 Difference]: Without dead ends: 529 [2021-11-25 19:20:20,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-11-25 19:20:20,847 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 158 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:20,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 883 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 317 Unchecked, 0.6s Time] [2021-11-25 19:20:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-25 19:20:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 407. [2021-11-25 19:20:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 363 states have (on average 1.2231404958677685) internal successors, (444), 389 states have internal predecessors, (444), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:20:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 464 transitions. [2021-11-25 19:20:20,855 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 464 transitions. Word has length 60 [2021-11-25 19:20:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:20,855 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 464 transitions. [2021-11-25 19:20:20,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2021-11-25 19:20:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 464 transitions. [2021-11-25 19:20:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 19:20:20,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:20,857 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:20,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-11-25 19:20:21,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (88)] Ended with exit code 0 [2021-11-25 19:20:21,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-11-25 19:20:21,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:20:21,468 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:20:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2013426008, now seen corresponding path program 1 times [2021-11-25 19:20:21,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:20:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947068797] [2021-11-25 19:20:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:21,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:20:21,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:20:21,470 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:20:21,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-11-25 19:20:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:22,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-25 19:20:22,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:22,379 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 [2021-11-25 19:20:22,387 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 [2021-11-25 19:20:22,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:22,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:20:22,454 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:20:22,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:20:22,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-25 19:20:22,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:20:22,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:20:23,129 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:20:23,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2021-11-25 19:20:23,344 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:20:23,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2021-11-25 19:20:23,532 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 40 treesize of output 22 [2021-11-25 19:20:27,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:27,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:27,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:27,904 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 19:20:27,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-25 19:20:27,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:27,958 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-25 19:20:27,958 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 44 treesize of output 42 [2021-11-25 19:20:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:20:28,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:29,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:20:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947068797] [2021-11-25 19:20:29,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947068797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:20:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1447943985] [2021-11-25 19:20:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:29,460 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:20:29,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:20:29,461 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:20:29,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2021-11-25 19:20:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:31,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:20:31,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:31,023 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 [2021-11-25 19:20:31,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:31,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:20:31,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:20:37,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:37,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:37,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:20:37,412 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-11-25 19:20:37,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2021-11-25 19:20:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:20:37,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:20:40,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1447943985] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:20:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760486] [2021-11-25 19:20:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:40,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:20:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:20:40,822 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:20:40,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-11-25 19:20:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:41,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:20:41,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:41,581 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 [2021-11-25 19:20:41,591 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 [2021-11-25 19:20:41,707 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:20:41,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-25 19:20:41,748 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:20:41,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-25 19:20:42,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:20:43,065 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:20:43,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2021-11-25 19:20:43,294 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:20:43,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2021-11-25 19:20:43,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2021-11-25 19:21:09,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:09,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:09,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:09,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:10,008 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:21:10,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2021-11-25 19:21:10,151 INFO L354 Elim1Store]: treesize reduction 42, result has 42.5 percent of original size [2021-11-25 19:21:10,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 187 treesize of output 205 [2021-11-25 19:21:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:21:10,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:21:13,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:21:13,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:21:13,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 28 [2021-11-25 19:21:13,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739638582] [2021-11-25 19:21:13,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:21:13,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-25 19:21:13,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:21:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-25 19:21:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=941, Unknown=11, NotChecked=0, Total=1056 [2021-11-25 19:21:13,780 INFO L87 Difference]: Start difference. First operand 407 states and 464 transitions. Second operand has 29 states, 28 states have (on average 5.571428571428571) internal successors, (156), 29 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:21:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:35,827 INFO L93 Difference]: Finished difference Result 468 states and 530 transitions. [2021-11-25 19:21:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 19:21:35,828 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.571428571428571) internal successors, (156), 29 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2021-11-25 19:21:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:35,830 INFO L225 Difference]: With dead ends: 468 [2021-11-25 19:21:35,830 INFO L226 Difference]: Without dead ends: 468 [2021-11-25 19:21:35,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 149 SyntacticMatches, 21 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=201, Invalid=1587, Unknown=18, NotChecked=0, Total=1806 [2021-11-25 19:21:35,830 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 71 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:35,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1474 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 332 Invalid, 0 Unknown, 513 Unchecked, 0.7s Time] [2021-11-25 19:21:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-25 19:21:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 420. [2021-11-25 19:21:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 376 states have (on average 1.2207446808510638) internal successors, (459), 402 states have internal predecessors, (459), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (14), 14 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 19:21:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 477 transitions. [2021-11-25 19:21:35,841 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 477 transitions. Word has length 62 [2021-11-25 19:21:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:35,842 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 477 transitions. [2021-11-25 19:21:35,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.571428571428571) internal successors, (156), 29 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:21:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 477 transitions. [2021-11-25 19:21:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 19:21:35,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:35,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:21:35,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-11-25 19:21:36,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-11-25 19:21:36,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (91)] Forceful destruction successful, exit code 0 [2021-11-25 19:21:36,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:21:36,460 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:21:36,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2013426009, now seen corresponding path program 1 times [2021-11-25 19:21:36,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:21:36,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238202149] [2021-11-25 19:21:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:36,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:21:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:21:36,462 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:21:36,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-11-25 19:21:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:37,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:21:37,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:21:37,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-25 19:21:37,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:21:37,941 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:21:37,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-25 19:21:38,203 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:21:38,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-25 19:21:38,396 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 41 treesize of output 23 [2021-11-25 19:21:42,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:42,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:21:42,632 INFO L354 Elim1Store]: treesize reduction 73, result has 31.1 percent of original size [2021-11-25 19:21:42,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 54 treesize of output 73 [2021-11-25 19:21:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:21:43,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:21:43,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:21:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238202149] [2021-11-25 19:21:43,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238202149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:21:43,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1262546894] [2021-11-25 19:21:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:43,466 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:21:43,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:21:43,467 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:21:43,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (94)] Waiting until timeout for monitored process [2021-11-25 19:21:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:45,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 19:21:45,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:21:45,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-25 19:21:48,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:48,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:48,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:21:48,457 INFO L354 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-11-25 19:21:48,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 46 [2021-11-25 19:21:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:21:48,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:21:48,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1262546894] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:21:48,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654928563] [2021-11-25 19:21:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:48,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:21:48,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:21:49,000 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:21:49,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-11-25 19:21:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:49,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:21:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:21:49,756 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 [2021-11-25 19:21:49,834 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:21:49,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-25 19:21:50,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:21:50,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 19:22:00,778 INFO L354 Elim1Store]: treesize reduction 150, result has 26.1 percent of original size [2021-11-25 19:22:00,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 64 treesize of output 101 [2021-11-25 19:22:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:22:01,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:05,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654928563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:22:05,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:22:05,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 24 [2021-11-25 19:22:05,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588324216] [2021-11-25 19:22:05,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:22:05,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:22:05,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:05,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:22:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=694, Unknown=3, NotChecked=0, Total=812 [2021-11-25 19:22:05,919 INFO L87 Difference]: Start difference. First operand 420 states and 477 transitions. Second operand has 25 states, 24 states have (on average 6.041666666666667) internal successors, (145), 25 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:22:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:23,953 INFO L93 Difference]: Finished difference Result 472 states and 536 transitions. [2021-11-25 19:22:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 19:22:23,954 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.041666666666667) internal successors, (145), 25 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2021-11-25 19:22:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:23,960 INFO L225 Difference]: With dead ends: 472 [2021-11-25 19:22:23,960 INFO L226 Difference]: Without dead ends: 472 [2021-11-25 19:22:23,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=250, Invalid=1467, Unknown=5, NotChecked=0, Total=1722 [2021-11-25 19:22:23,962 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 176 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:23,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 1100 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 377 Unchecked, 0.4s Time] [2021-11-25 19:22:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-25 19:22:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 384. [2021-11-25 19:22:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 341 states have (on average 1.2287390029325513) internal successors, (419), 367 states have internal predecessors, (419), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 19:22:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 436 transitions. [2021-11-25 19:22:23,976 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 436 transitions. Word has length 62 [2021-11-25 19:22:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:23,977 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 436 transitions. [2021-11-25 19:22:23,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.041666666666667) internal successors, (145), 25 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:22:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 436 transitions. [2021-11-25 19:22:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 19:22:23,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:23,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:24,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-11-25 19:22:24,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (94)] Ended with exit code 0 [2021-11-25 19:22:24,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:24,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:24,604 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:22:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1581600236, now seen corresponding path program 1 times [2021-11-25 19:22:24,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:24,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372219003] [2021-11-25 19:22:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:24,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:24,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:24,606 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:24,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-11-25 19:22:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:25,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:22:25,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:25,493 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 [2021-11-25 19:22:25,506 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 [2021-11-25 19:22:25,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:22:25,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:22:26,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:26,314 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:22:26,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:22:26,336 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:22:26,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:22:26,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:26,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:27,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:22:27,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:22:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:22:27,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:27,511 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 40 treesize of output 32 [2021-11-25 19:22:27,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:27,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:30,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372219003] [2021-11-25 19:22:30,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372219003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:22:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128424769] [2021-11-25 19:22:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:30,028 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:30,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:22:30,028 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:22:30,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2021-11-25 19:22:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:22:31,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:31,615 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 [2021-11-25 19:22:31,630 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 [2021-11-25 19:22:32,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:32,445 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:22:32,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:22:32,468 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:22:32,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 19:22:32,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:32,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:33,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:22:33,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:22:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:33,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:33,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128424769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:33,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:22:33,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2021-11-25 19:22:33,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324340513] [2021-11-25 19:22:33,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:33,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:22:33,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:33,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:22:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=285, Unknown=1, NotChecked=0, Total=342 [2021-11-25 19:22:33,536 INFO L87 Difference]: Start difference. First operand 384 states and 436 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 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) [2021-11-25 19:22:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:33,946 INFO L93 Difference]: Finished difference Result 475 states and 553 transitions. [2021-11-25 19:22:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:22:33,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 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 62 [2021-11-25 19:22:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:33,959 INFO L225 Difference]: With dead ends: 475 [2021-11-25 19:22:33,959 INFO L226 Difference]: Without dead ends: 475 [2021-11-25 19:22:33,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=56, Invalid=285, Unknown=1, NotChecked=0, Total=342 [2021-11-25 19:22:33,959 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 33 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:33,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 631 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 280 Unchecked, 0.4s Time] [2021-11-25 19:22:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-11-25 19:22:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 454. [2021-11-25 19:22:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 407 states have (on average 1.2235872235872236) internal successors, (498), 434 states have internal predecessors, (498), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (26), 16 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-25 19:22:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 530 transitions. [2021-11-25 19:22:33,969 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 530 transitions. Word has length 62 [2021-11-25 19:22:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:33,969 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 530 transitions. [2021-11-25 19:22:33,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 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) [2021-11-25 19:22:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 530 transitions. [2021-11-25 19:22:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:22:33,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:33,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:33,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-11-25 19:22:34,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (97)] Ended with exit code 0 [2021-11-25 19:22:34,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:34,371 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:22:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1661225705, now seen corresponding path program 1 times [2021-11-25 19:22:34,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:34,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626544026] [2021-11-25 19:22:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:34,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:34,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:34,373 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:34,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-11-25 19:22:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:35,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:22:35,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:35,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:35,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-25 19:22:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:35,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:35,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:35,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626544026] [2021-11-25 19:22:35,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626544026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:35,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:35,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:22:35,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508429217] [2021-11-25 19:22:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:35,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:22:35,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:22:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:22:35,353 INFO L87 Difference]: Start difference. First operand 454 states and 530 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-25 19:22:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:35,998 INFO L93 Difference]: Finished difference Result 469 states and 544 transitions. [2021-11-25 19:22:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:22:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 65 [2021-11-25 19:22:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:36,001 INFO L225 Difference]: With dead ends: 469 [2021-11-25 19:22:36,001 INFO L226 Difference]: Without dead ends: 469 [2021-11-25 19:22:36,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:22:36,001 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 172 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:36,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 309 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:22:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-25 19:22:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2021-11-25 19:22:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 410 states have (on average 1.224390243902439) internal successors, (502), 437 states have internal predecessors, (502), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (26), 16 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-25 19:22:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 534 transitions. [2021-11-25 19:22:36,009 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 534 transitions. Word has length 65 [2021-11-25 19:22:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:36,009 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 534 transitions. [2021-11-25 19:22:36,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-25 19:22:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 534 transitions. [2021-11-25 19:22:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:22:36,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:36,011 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:36,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:36,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:36,220 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:22:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1661225704, now seen corresponding path program 1 times [2021-11-25 19:22:36,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:36,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157856130] [2021-11-25 19:22:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:36,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:36,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:36,222 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:36,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-11-25 19:22:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:36,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:22:36,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:37,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:37,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:37,229 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 17 treesize of output 9 [2021-11-25 19:22:37,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:22:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:37,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:37,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:37,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157856130] [2021-11-25 19:22:37,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157856130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:37,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:37,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:22:37,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192353099] [2021-11-25 19:22:37,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:37,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:22:37,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:37,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:22:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:22:37,258 INFO L87 Difference]: Start difference. First operand 457 states and 534 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-25 19:22:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:37,945 INFO L93 Difference]: Finished difference Result 485 states and 560 transitions. [2021-11-25 19:22:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:22:37,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 65 [2021-11-25 19:22:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:37,948 INFO L225 Difference]: With dead ends: 485 [2021-11-25 19:22:37,948 INFO L226 Difference]: Without dead ends: 485 [2021-11-25 19:22:37,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:22:37,949 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 257 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:37,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 306 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:22:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-25 19:22:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 457. [2021-11-25 19:22:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 410 states have (on average 1.221951219512195) internal successors, (501), 437 states have internal predecessors, (501), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (26), 16 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-25 19:22:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 533 transitions. [2021-11-25 19:22:37,959 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 533 transitions. Word has length 65 [2021-11-25 19:22:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:37,959 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 533 transitions. [2021-11-25 19:22:37,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-25 19:22:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 533 transitions. [2021-11-25 19:22:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:22:37,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:37,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:37,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:38,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:22:38,176 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:22:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1465469586, now seen corresponding path program 1 times [2021-11-25 19:22:38,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:38,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206604288] [2021-11-25 19:22:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:38,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:38,178 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:38,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-11-25 19:22:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:39,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:22:39,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:39,015 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 [2021-11-25 19:22:39,022 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 [2021-11-25 19:22:39,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:22:39,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 19:22:39,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:39,844 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:22:39,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:22:39,864 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:22:39,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:22:40,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:40,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:40,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:22:40,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:22:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:22:40,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:40,910 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 40 treesize of output 32 [2021-11-25 19:22:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:40,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:43,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206604288] [2021-11-25 19:22:43,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206604288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:22:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [170740667] [2021-11-25 19:22:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:43,392 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:43,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:22:43,394 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:22:43,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (101)] Waiting until timeout for monitored process [2021-11-25 19:22:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:44,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:22:44,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:44,924 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 [2021-11-25 19:22:44,941 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 [2021-11-25 19:22:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:22:45,818 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:22:45,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-11-25 19:22:45,837 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:22:45,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:22:46,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:46,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:46,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:22:46,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:22:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:46,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:46,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [170740667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:46,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:22:46,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 15 [2021-11-25 19:22:46,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497145194] [2021-11-25 19:22:46,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:46,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:22:46,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:22:46,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2021-11-25 19:22:46,817 INFO L87 Difference]: Start difference. First operand 457 states and 533 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 11 states have internal predecessors, (54), 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) [2021-11-25 19:22:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:47,099 INFO L93 Difference]: Finished difference Result 553 states and 658 transitions. [2021-11-25 19:22:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:22:47,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 11 states have internal predecessors, (54), 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 66 [2021-11-25 19:22:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:47,102 INFO L225 Difference]: With dead ends: 553 [2021-11-25 19:22:47,103 INFO L226 Difference]: Without dead ends: 553 [2021-11-25 19:22:47,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2021-11-25 19:22:47,103 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 57 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:47,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 556 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 209 Unchecked, 0.3s Time] [2021-11-25 19:22:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-11-25 19:22:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 449. [2021-11-25 19:22:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 402 states have (on average 1.2213930348258706) internal successors, (491), 429 states have internal predecessors, (491), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (26), 16 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-25 19:22:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 523 transitions. [2021-11-25 19:22:47,113 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 523 transitions. Word has length 66 [2021-11-25 19:22:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:47,113 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 523 transitions. [2021-11-25 19:22:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 11 states have internal predecessors, (54), 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) [2021-11-25 19:22:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 523 transitions. [2021-11-25 19:22:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:22:47,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:47,115 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:47,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:47,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (101)] Ended with exit code 0 [2021-11-25 19:22:47,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:47,524 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:22:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash 309312638, now seen corresponding path program 1 times [2021-11-25 19:22:47,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:47,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170944680] [2021-11-25 19:22:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:47,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:47,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:47,526 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:47,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-11-25 19:22:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:48,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:22:48,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:48,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:48,578 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-11-25 19:22:48,579 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 [2021-11-25 19:22:48,712 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:22:48,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-11-25 19:22:48,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 19:22:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:48,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:49,110 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 40 treesize of output 36 [2021-11-25 19:22:49,249 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:22:49,250 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 35 treesize of output 32 [2021-11-25 19:22:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:49,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:49,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170944680] [2021-11-25 19:22:49,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170944680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:22:49,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1104350470] [2021-11-25 19:22:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:49,350 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:49,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:22:49,351 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:22:49,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (103)] Waiting until timeout for monitored process [2021-11-25 19:22:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:50,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:22:50,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:50,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:51,149 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-11-25 19:22:51,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2021-11-25 19:22:51,374 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:22:51,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2021-11-25 19:22:51,553 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 19:22:51,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 19:22:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:51,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:51,722 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 40 treesize of output 36 [2021-11-25 19:22:51,839 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:22:51,840 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 35 treesize of output 32 [2021-11-25 19:22:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:51,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1104350470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:22:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104552897] [2021-11-25 19:22:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:51,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:22:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:22:51,992 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:22:51,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-11-25 19:22:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:52,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:22:52,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:52,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:52,796 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-25 19:22:52,796 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 26 treesize of output 37 [2021-11-25 19:22:52,992 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:22:52,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:22:53,250 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 19:22:53,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2021-11-25 19:22:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:53,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:53,394 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 42 treesize of output 38 [2021-11-25 19:22:53,511 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:22:53,511 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 35 treesize of output 32 [2021-11-25 19:22:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:53,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104552897] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:22:53,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:22:53,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 8, 8] total 23 [2021-11-25 19:22:53,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847145135] [2021-11-25 19:22:53,611 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:22:53,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:22:53,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:22:53,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:22:53,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:22:53,611 INFO L87 Difference]: Start difference. First operand 449 states and 523 transitions. Second operand has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 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) [2021-11-25 19:22:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:55,232 INFO L93 Difference]: Finished difference Result 657 states and 774 transitions. [2021-11-25 19:22:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:22:55,232 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 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 66 [2021-11-25 19:22:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:55,235 INFO L225 Difference]: With dead ends: 657 [2021-11-25 19:22:55,235 INFO L226 Difference]: Without dead ends: 657 [2021-11-25 19:22:55,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 361 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-11-25 19:22:55,235 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 639 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 621 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:55,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 1214 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 350 Invalid, 0 Unknown, 621 Unchecked, 0.9s Time] [2021-11-25 19:22:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-25 19:22:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 478. [2021-11-25 19:22:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 431 states have (on average 1.2320185614849188) internal successors, (531), 458 states have internal predecessors, (531), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (26), 16 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-25 19:22:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 563 transitions. [2021-11-25 19:22:55,244 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 563 transitions. Word has length 66 [2021-11-25 19:22:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:55,244 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 563 transitions. [2021-11-25 19:22:55,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 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) [2021-11-25 19:22:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 563 transitions. [2021-11-25 19:22:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:22:55,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:55,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:55,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:55,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-11-25 19:22:55,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (103)] Ended with exit code 0 [2021-11-25 19:22:55,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:55,852 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-25 19:22:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash 309312639, now seen corresponding path program 1 times [2021-11-25 19:22:55,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:22:55,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396435394] [2021-11-25 19:22:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:55,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:22:55,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:22:55,854 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:22:55,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-11-25 19:22:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:56,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:22:56,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:56,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:56,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:22:57,086 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 19:22:57,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:22:57,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:22:57,223 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:22:57,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2021-11-25 19:22:57,258 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:22:57,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:22:57,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:22:57,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:22:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:57,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:22:58,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-25 19:22:58,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 123 [2021-11-25 19:22:58,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:22:58,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-25 19:22:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:22:59,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:22:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396435394] [2021-11-25 19:22:59,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396435394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:22:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [173621613] [2021-11-25 19:22:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:59,156 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:22:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:22:59,159 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:22:59,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (106)] Waiting until timeout for monitored process [2021-11-25 19:23:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:00,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:23:00,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:00,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:23:00,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:23:01,148 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 19:23:01,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-25 19:23:01,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 19:23:01,391 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:23:01,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2021-11-25 19:23:01,425 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:23:01,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:23:01,721 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 19:23:01,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:23:01,730 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 19:23:01,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-11-25 19:23:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:23:01,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:02,537 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 96 treesize of output 92 [2021-11-25 19:23:02,543 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 139 treesize of output 123 [2021-11-25 19:23:04,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:23:04,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-25 19:23:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:23:04,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [173621613] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:23:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770972806] [2021-11-25 19:23:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:04,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:23:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:23:04,187 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:23:04,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad66cb49-e27b-459c-a783-1829198dd8e6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-11-25 19:23:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:04,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:23:04,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:23:05,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:23:05,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:23:05,244 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-25 19:23:05,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-11-25 19:23:05,279 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 19:23:05,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:23:05,376 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:23:05,376 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 25 treesize of output 20 [2021-11-25 19:23:05,413 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:23:05,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2021-11-25 19:23:05,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 19:23:05,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:23:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:23:05,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:23:06,374 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 96 treesize of output 92 [2021-11-25 19:23:06,378 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 139 treesize of output 123