./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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 7efcb16e512d7de15a71f6cd895dcd8493c4b646 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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 7efcb16e512d7de15a71f6cd895dcd8493c4b646 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:40:11,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:11,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:11,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:11,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:11,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:11,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:11,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:11,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:11,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:11,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:11,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:11,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:11,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:11,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:11,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:11,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:11,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:11,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:11,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:11,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:11,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:11,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:11,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:11,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:11,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:11,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:11,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:11,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:11,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:11,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:11,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:11,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:11,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:11,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:11,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:11,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:11,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:11,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:11,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:11,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:11,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:40:11,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:11,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:11,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:11,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:11,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:11,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:11,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:40:11,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:11,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:11,914 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:40:11,915 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:40:11,916 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:11,916 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:40:11,916 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:40:11,916 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:40:11,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:40:11,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:40:11,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:11,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:40:11,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:40:11,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:40:11,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:40:11,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:11,919 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:40:11,919 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:40:11,919 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:40:11,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:11,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:40:11,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:40:11,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:11,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:11,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:11,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:11,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:11,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:11,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:40:11,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:40:11,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:11,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:11,924 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_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2021-10-13 07:40:12,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:12,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:12,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:12,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:12,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:12,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/memsafety-ext3/scopes3.c [2021-10-13 07:40:12,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/1fdd55cce/056a7268064e429eb79ca8dee3ea42bf/FLAG865e839f6 [2021-10-13 07:40:12,810 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:12,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/sv-benchmarks/c/memsafety-ext3/scopes3.c [2021-10-13 07:40:12,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/1fdd55cce/056a7268064e429eb79ca8dee3ea42bf/FLAG865e839f6 [2021-10-13 07:40:13,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/1fdd55cce/056a7268064e429eb79ca8dee3ea42bf [2021-10-13 07:40:13,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:13,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:13,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:13,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:13,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:13,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3825b796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13, skipping insertion in model container [2021-10-13 07:40:13,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:13,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:13,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:13,403 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:40:13,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:13,427 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:40:13,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13 WrapperNode [2021-10-13 07:40:13,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:13,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:13,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:40:13,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:40:13,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:13,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:40:13,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:40:13,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:40:13,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:40:13,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:40:13,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:40:13,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:40:13,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (1/1) ... [2021-10-13 07:40:13,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:13,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:13,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:40:13,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:40:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:40:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:40:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:40:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:40:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:40:13,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:40:13,760 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 07:40:13,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:13 BoogieIcfgContainer [2021-10-13 07:40:13,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:40:13,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:40:13,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:40:13,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:40:13,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:13" (1/3) ... [2021-10-13 07:40:13,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3267f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:13, skipping insertion in model container [2021-10-13 07:40:13,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:13" (2/3) ... [2021-10-13 07:40:13,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3267f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:13, skipping insertion in model container [2021-10-13 07:40:13,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:13" (3/3) ... [2021-10-13 07:40:13,771 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes3.c [2021-10-13 07:40:13,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:40:13,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-13 07:40:13,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:40:13,827 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:40:13,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 07:40:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 5 states have (on average 2.2) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:40:13,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:13,845 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:40:13,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:13,852 INFO L82 PathProgramCache]: Analyzing trace with hash 57021, now seen corresponding path program 1 times [2021-10-13 07:40:13,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:13,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382671191] [2021-10-13 07:40:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:13,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:14,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:14,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382671191] [2021-10-13 07:40:14,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382671191] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:14,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:14,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:40:14,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043740484] [2021-10-13 07:40:14,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:14,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:14,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:14,108 INFO L87 Difference]: Start difference. First operand has 11 states, 5 states have (on average 2.2) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:14,157 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-13 07:40:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:14,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:40:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:14,167 INFO L225 Difference]: With dead ends: 10 [2021-10-13 07:40:14,168 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:40:14,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:40:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:40:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 5 states have (on average 1.8) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 07:40:14,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2021-10-13 07:40:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:14,198 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 07:40:14,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 07:40:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:40:14,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:14,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:40:14,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:40:14,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:14,210 INFO L82 PathProgramCache]: Analyzing trace with hash 57022, now seen corresponding path program 1 times [2021-10-13 07:40:14,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:14,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237662090] [2021-10-13 07:40:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:14,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:14,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:14,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237662090] [2021-10-13 07:40:14,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237662090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:14,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:14,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:40:14,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766139497] [2021-10-13 07:40:14,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:14,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:14,282 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:14,298 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-13 07:40:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:14,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:40:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:14,299 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:40:14,299 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:40:14,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:40:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2021-10-13 07:40:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-13 07:40:14,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2021-10-13 07:40:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:14,304 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-13 07:40:14,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-13 07:40:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:40:14,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:14,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:40:14,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:40:14,305 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:14,306 INFO L82 PathProgramCache]: Analyzing trace with hash 57680, now seen corresponding path program 1 times [2021-10-13 07:40:14,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:14,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51005448] [2021-10-13 07:40:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:14,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:14,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:14,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51005448] [2021-10-13 07:40:14,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51005448] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:14,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:14,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:40:14,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079184637] [2021-10-13 07:40:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:14,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:14,331 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:14,352 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-13 07:40:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:14,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:40:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:14,354 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:40:14,354 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:40:14,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:40:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-10-13 07:40:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 07:40:14,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2021-10-13 07:40:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:14,357 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 07:40:14,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 07:40:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:40:14,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:14,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:40:14,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:40:14,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:14,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:14,359 INFO L82 PathProgramCache]: Analyzing trace with hash 54812577, now seen corresponding path program 1 times [2021-10-13 07:40:14,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:14,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792488645] [2021-10-13 07:40:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:14,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:14,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:14,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792488645] [2021-10-13 07:40:14,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792488645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:40:14,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216240028] [2021-10-13 07:40:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:14,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:14,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:14,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:40:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:14,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:14,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:14,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:14,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216240028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:14,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1260165865] [2021-10-13 07:40:14,608 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-13 07:40:14,608 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:40:14,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:40:14,617 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:40:14,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:40:14,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-13 07:40:14,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-13 07:40:14,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:40:14,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-13 07:40:14,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-13 07:40:14,684 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,691 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-13 07:40:14,694 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,694 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:21 [2021-10-13 07:40:14,701 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.8 percent of original size [2021-10-13 07:40:14,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-13 07:40:14,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 07:40:14,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:40:14,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-13 07:40:14,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-13 07:40:14,726 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:40:14,740 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,740 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:50 [2021-10-13 07:40:14,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:14,754 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 63 [2021-10-13 07:40:14,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:40:14,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-13 07:40:14,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-13 07:40:14,765 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,778 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-10-13 07:40:14,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-13 07:40:14,780 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,781 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:58 [2021-10-13 07:40:14,786 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size [2021-10-13 07:40:14,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,819 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:40:14,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-13 07:40:14,823 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,829 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:14,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:14,840 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-13 07:40:14,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-13 07:40:14,880 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:40:14,881 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 12 treesize of output 14 [2021-10-13 07:40:14,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:14,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:14,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:14,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:14,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-13 07:40:14,913 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-13 07:40:14,914 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:81, output treesize:80 [2021-10-13 07:40:14,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:14,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,968 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:14,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:14,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 07:40:14,974 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:14,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,008 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-13 07:40:15,022 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,037 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,043 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,045 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-13 07:40:15,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:40:15,047 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,051 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:15,059 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-13 07:40:15,065 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:15,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-10-13 07:40:15,072 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,081 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-13 07:40:15,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-10-13 07:40:15,093 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,099 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,120 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-13 07:40:15,133 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-13 07:40:15,158 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,166 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:15,173 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,174 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-13 07:40:15,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:40:15,181 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:15,187 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-13 07:40:15,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-10-13 07:40:15,193 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,199 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-13 07:40:15,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-13 07:40:15,236 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-13 07:40:15,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-10-13 07:40:15,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:40:15,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:40:15,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:15,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:40:15,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-13 07:40:15,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-13 07:40:15,272 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:15,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:15,298 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,303 INFO L180 QuantifierPusher]: treesize reduction 10, result has 93.7 percent of original size [2021-10-13 07:40:15,305 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-13 07:40:15,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-10-13 07:40:15,314 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:165, output treesize:147 [2021-10-13 07:40:15,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,343 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:40:15,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:40:15,347 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,350 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:15,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 07:40:15,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:40:15,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 07:40:15,365 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,369 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,374 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,379 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:40:15,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-13 07:40:15,381 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:40:15,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:40:15,386 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:40:15,393 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,397 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-13 07:40:15,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-13 07:40:15,402 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,407 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:40:15,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:40:15,411 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:15,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-13 07:40:15,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-13 07:40:15,423 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,432 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:40:15,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:40:15,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,440 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:15,443 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 07:40:15,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:40:15,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-10-13 07:40:15,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-13 07:40:15,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,479 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,481 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-13 07:40:15,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 07:40:15,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:40:15,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:40:15,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:15,509 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-10-13 07:40:15,515 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,520 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-13 07:40:15,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 07:40:15,526 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,528 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:40:15,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:40:15,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:15,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-10-13 07:40:15,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,545 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,546 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-13 07:40:15,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-13 07:40:15,549 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,551 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-13 07:40:15,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 07:40:15,557 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,559 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:40:15,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:40:15,562 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-13 07:40:15,567 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:40:15,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-13 07:40:15,570 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:40:15,576 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-13 07:40:15,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-13 07:40:15,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,584 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:40:15,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-13 07:40:15,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 07:40:15,593 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,595 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:40:15,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:40:15,597 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:15,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-13 07:40:15,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-10-13 07:40:15,648 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:40:15,648 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 12 treesize of output 14 [2021-10-13 07:40:15,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:15,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:40:15,655 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:15,708 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-13 07:40:15,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2021-10-13 07:40:15,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:40:15,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:40:15,714 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:15,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:15,740 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,749 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.0 percent of original size [2021-10-13 07:40:15,751 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,753 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-13 07:40:15,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 07:40:15,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,757 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:40:15,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:40:15,761 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:15,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:15,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:15,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-10-13 07:40:15,770 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-10-13 07:40:15,770 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:202, output treesize:194 [2021-10-13 07:40:15,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:15,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:15,991 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for v_ULTIMATE.start_main_~p~0.base_18 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:40:15,994 INFO L168 Benchmark]: Toolchain (without parser) took 2790.80 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.8 MB in the beginning and 64.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:15,994 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:15,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.66 ms. Allocated memory is still 102.8 MB. Free memory was 66.6 MB in the beginning and 78.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:15,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.18 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 77.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:15,995 INFO L168 Benchmark]: Boogie Preprocessor took 16.49 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 76.4 MB in the end (delta: 865.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:15,995 INFO L168 Benchmark]: RCFGBuilder took 274.65 ms. Allocated memory is still 102.8 MB. Free memory was 76.4 MB in the beginning and 66.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:15,996 INFO L168 Benchmark]: TraceAbstraction took 2229.07 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:15,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.66 ms. Allocated memory is still 102.8 MB. Free memory was 66.6 MB in the beginning and 78.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.18 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 77.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.49 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 76.4 MB in the end (delta: 865.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.65 ms. Allocated memory is still 102.8 MB. Free memory was 76.4 MB in the beginning and 66.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2229.07 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for v_ULTIMATE.start_main_~p~0.base_18 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for v_ULTIMATE.start_main_~p~0.base_18: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:40:16,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:40:18,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:18,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:18,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:18,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:18,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:18,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:18,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:18,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:18,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:18,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:18,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:18,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:18,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:18,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:18,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:18,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:18,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:18,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:18,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:18,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:18,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:18,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:18,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:18,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:18,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:18,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:18,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:18,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:18,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:18,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:18,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:18,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:18,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:18,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:18,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:18,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:18,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:18,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:18,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:18,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:18,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:40:18,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:18,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:18,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:18,535 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:18,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:18,536 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:18,536 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:18,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:18,537 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:18,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:40:18,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:40:18,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:18,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:40:18,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:40:18,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:40:18,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:40:18,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:18,540 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:40:18,541 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:40:18,541 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:40:18,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:18,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:40:18,542 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:40:18,542 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:40:18,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:40:18,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:18,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:18,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:40:18,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:18,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:18,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:18,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:18,544 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:40:18,544 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:18,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:18,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:18,545 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_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2021-10-13 07:40:18,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:18,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:18,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:18,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:18,949 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:18,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/memsafety-ext3/scopes3.c [2021-10-13 07:40:19,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/96c0b5b6d/e76f64a3a864499593819c7f1284a80b/FLAGc9315739e [2021-10-13 07:40:19,488 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:19,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/sv-benchmarks/c/memsafety-ext3/scopes3.c [2021-10-13 07:40:19,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/96c0b5b6d/e76f64a3a864499593819c7f1284a80b/FLAGc9315739e [2021-10-13 07:40:19,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/data/96c0b5b6d/e76f64a3a864499593819c7f1284a80b [2021-10-13 07:40:19,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:19,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:19,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:19,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:19,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:19,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:19" (1/1) ... [2021-10-13 07:40:19,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da0c642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:19, skipping insertion in model container [2021-10-13 07:40:19,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:19" (1/1) ... [2021-10-13 07:40:19,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:19,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:20,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:20,067 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:40:20,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:20,106 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:40:20,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20 WrapperNode [2021-10-13 07:40:20,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:20,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:20,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:40:20,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:40:20,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:20,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:40:20,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:40:20,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:40:20,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:40:20,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:40:20,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:40:20,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:40:20,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2021-10-13 07:40:20,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:20,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:20,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:40:20,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:40:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:40:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:40:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:40:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:40:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:40:20,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:40:20,463 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 07:40:20,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:20 BoogieIcfgContainer [2021-10-13 07:40:20,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:40:20,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:40:20,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:40:20,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:40:20,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:19" (1/3) ... [2021-10-13 07:40:20,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3b11f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:20, skipping insertion in model container [2021-10-13 07:40:20,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (2/3) ... [2021-10-13 07:40:20,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3b11f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:20, skipping insertion in model container [2021-10-13 07:40:20,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:20" (3/3) ... [2021-10-13 07:40:20,473 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes3.c [2021-10-13 07:40:20,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:40:20,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-13 07:40:20,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:40:20,527 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:40:20,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 07:40:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:40:20,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:20,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:40:20,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash 925990, now seen corresponding path program 1 times [2021-10-13 07:40:20,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:20,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578032009] [2021-10-13 07:40:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:20,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:20,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:20,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:40:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:20,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:40:20,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:20,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:20,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:20,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578032009] [2021-10-13 07:40:20,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578032009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:20,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:20,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:40:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300527412] [2021-10-13 07:40:20,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:40:20,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:40:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:40:20,722 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-10-13 07:40:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:20,733 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-13 07:40:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:40:20,734 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 [2021-10-13 07:40:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:20,741 INFO L225 Difference]: With dead ends: 15 [2021-10-13 07:40:20,741 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:40:20,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:40:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:40:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:40:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 07:40:20,771 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-13 07:40:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:20,771 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 07:40:20,771 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) [2021-10-13 07:40:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 07:40:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:40:20,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:20,772 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:40:20,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:20,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:20,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:20,985 INFO L82 PathProgramCache]: Analyzing trace with hash 925711, now seen corresponding path program 1 times [2021-10-13 07:40:20,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:20,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601432751] [2021-10-13 07:40:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:20,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:20,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:21,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:40:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:21,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:21,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:21,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:21,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:21,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601432751] [2021-10-13 07:40:21,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601432751] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:21,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:21,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:40:21,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237829360] [2021-10-13 07:40:21,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:21,091 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:21,114 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-13 07:40:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:40:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:40:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:21,125 INFO L225 Difference]: With dead ends: 19 [2021-10-13 07:40:21,125 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 07:40:21,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 07:40:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-10-13 07:40:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-13 07:40:21,131 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 4 [2021-10-13 07:40:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:21,133 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-13 07:40:21,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-13 07:40:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:40:21,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:21,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:40:21,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:21,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:21,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:21,343 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-10-13 07:40:21,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:21,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233654010] [2021-10-13 07:40:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:21,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:21,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:21,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:40:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:21,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:21,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:21,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:40:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:21,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:21,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:21,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233654010] [2021-10-13 07:40:21,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233654010] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:21,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:21,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:40:21,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47406943] [2021-10-13 07:40:21,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:21,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:21,516 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:21,546 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-13 07:40:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:21,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:40:21,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:21,548 INFO L225 Difference]: With dead ends: 16 [2021-10-13 07:40:21,549 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 07:40:21,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 07:40:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-13 07:40:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-13 07:40:21,555 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2021-10-13 07:40:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:21,556 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-13 07:40:21,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-13 07:40:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:40:21,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:21,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:40:21,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:21,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:21,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-10-13 07:40:21,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:21,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955409029] [2021-10-13 07:40:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:21,775 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:21,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:21,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:21,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:40:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:21,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:40:21,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:21,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:40:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:21,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:21,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:21,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955409029] [2021-10-13 07:40:21,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955409029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:21,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:21,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:40:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356362124] [2021-10-13 07:40:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:21,908 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:21,944 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 07:40:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:21,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:40:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:21,945 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:40:21,945 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:40:21,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:40:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:40:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 07:40:21,949 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-10-13 07:40:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:21,949 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 07:40:21,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 07:40:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:40:21,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:21,950 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-13 07:40:21,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:40:22,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:22,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash 742961935, now seen corresponding path program 1 times [2021-10-13 07:40:22,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:22,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791825144] [2021-10-13 07:40:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:22,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:22,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:22,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:22,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:40:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:22,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:40:22,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:22,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:22,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:22,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791825144] [2021-10-13 07:40:22,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791825144] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:22,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971404555] [2021-10-13 07:40:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:22,429 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:22,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:22,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 07:40:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:22,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:40:22,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:22,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:22,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1971404555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:22,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266465839] [2021-10-13 07:40:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:22,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:22,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:22,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:22,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:40:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:22,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:40:22,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:22,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:22,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266465839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:22,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:40:22,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 07:40:22,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243607876] [2021-10-13 07:40:22,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:40:22,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:40:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:40:22,774 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:22,880 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-13 07:40:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:40:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:40:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:22,882 INFO L225 Difference]: With dead ends: 26 [2021-10-13 07:40:22,882 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 07:40:22,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:40:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 07:40:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 07:40:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-13 07:40:22,887 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2021-10-13 07:40:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:22,887 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-13 07:40:22,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-13 07:40:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:40:22,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:22,888 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1] [2021-10-13 07:40:22,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:23,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:23,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 07:40:23,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:23,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash -620816113, now seen corresponding path program 2 times [2021-10-13 07:40:23,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:23,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006415594] [2021-10-13 07:40:23,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:40:23,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:23,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:23,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:23,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:40:23,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:40:23,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:40:23,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:40:23,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:23,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:24,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:24,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006415594] [2021-10-13 07:40:24,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006415594] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:24,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397455183] [2021-10-13 07:40:24,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:40:24,038 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:24,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:24,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:24,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 07:40:24,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:40:24,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:40:24,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:40:24,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:24,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:24,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [397455183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:24,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465736174] [2021-10-13 07:40:24,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:40:24,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:24,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:24,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 07:40:24,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:40:24,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:40:24,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:40:24,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:24,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:24,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465736174] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:24,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:40:24,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-10-13 07:40:24,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683695704] [2021-10-13 07:40:24,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:40:24,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:40:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:40:24,709 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:24,913 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-10-13 07:40:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:40:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:40:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:24,915 INFO L225 Difference]: With dead ends: 38 [2021-10-13 07:40:24,915 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 07:40:24,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 239.7ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:40:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 07:40:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-13 07:40:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-13 07:40:24,920 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 22 [2021-10-13 07:40:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:24,921 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-13 07:40:24,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-13 07:40:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 07:40:24,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:24,925 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1] [2021-10-13 07:40:24,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:25,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:25,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:25,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:25,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-13 07:40:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1565294351, now seen corresponding path program 3 times [2021-10-13 07:40:25,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:25,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993944608] [2021-10-13 07:40:25,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:40:25,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:25,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:25,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:25,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:40:25,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 07:40:25,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 07:40:25,817 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:40:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:40:25,964 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:40:25,964 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:40:25,965 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:40:25,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:40:25,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:40:25,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:40:25,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:40:25,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:26,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:26,174 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:40:26,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:40:26 BoogieIcfgContainer [2021-10-13 07:40:26,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:40:26,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:40:26,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:40:26,203 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:40:26,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:20" (3/4) ... [2021-10-13 07:40:26,205 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:40:26,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:40:26,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:40:26,276 INFO L168 Benchmark]: Toolchain (without parser) took 6399.41 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 38.2 MB in the beginning and 49.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:26,276 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:26,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.52 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 43.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:26,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.97 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:26,278 INFO L168 Benchmark]: Boogie Preprocessor took 22.54 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 41.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:26,278 INFO L168 Benchmark]: RCFGBuilder took 269.85 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 32.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:26,279 INFO L168 Benchmark]: TraceAbstraction took 5735.07 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 52.4 MB in the end (delta: -20.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:26,279 INFO L168 Benchmark]: Witness Printer took 72.36 ms. Allocated memory is still 77.6 MB. Free memory was 52.4 MB in the beginning and 49.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:26,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.52 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 43.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.97 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.54 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 41.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 269.85 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 32.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5735.07 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 52.4 MB in the end (delta: -20.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.36 ms. Allocated memory is still 77.6 MB. Free memory was 52.4 MB in the beginning and 49.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND FALSE !(i < 10) [L8] p[0] = 2 - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5653.2ms, OverallIterations: 7, TraceHistogramMax: 10, EmptinessCheckTime: 31.8ms, AutomataDifference: 466.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 60 SDslu, 127 SDs, 0 SdLazy, 163 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 201.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 382.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 96.6ms SsaConstructionTime, 434.4ms SatisfiabilityAnalysisTime, 1472.6ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 698 SizeOfPredicates, 10 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 0/336 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:40:26,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f911306-2f62-4022-80b4-5528f5724ffa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...