./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 356492c77ca30b45c8c64fdda8fe0cb19edee2c6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 356492c77ca30b45c8c64fdda8fe0cb19edee2c6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:07:15,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:07:15,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:07:15,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:07:15,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:07:15,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:07:15,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:07:15,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:07:15,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:07:15,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:07:15,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:07:15,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:07:15,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:07:15,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:07:15,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:07:15,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:07:15,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:07:15,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:07:15,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:07:15,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:07:15,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:07:15,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:07:15,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:07:15,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:07:15,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:07:15,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:07:15,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:07:15,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:07:15,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:07:15,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:07:15,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:07:15,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:07:15,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:07:15,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:07:15,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:07:15,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:07:15,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:07:15,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:07:15,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:07:15,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:07:15,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:07:15,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:07:15,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:07:15,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:07:15,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:07:15,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:07:15,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:07:15,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:07:15,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:07:15,928 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:07:15,937 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:07:15,937 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:07:15,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:07:15,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:07:15,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:07:15,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:07:15,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:07:15,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:07:15,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:07:15,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:07:15,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:07:15,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:07:15,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:07:15,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:07:15,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:07:15,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:07:15,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:07:15,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:07:15,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:07:15,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:07:15,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:07:15,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:07:15,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:07:15,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:07:15,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:07:15,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:07:15,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:07:15,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:07:15,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:07:15,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:07:15,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:07:15,951 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_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 356492c77ca30b45c8c64fdda8fe0cb19edee2c6 [2021-10-16 02:07:16,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:07:16,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:07:16,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:07:16,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:07:16,366 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:07:16,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2021-10-16 02:07:16,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/62880f7e2/d298bd23ef384d08863124e446563488/FLAG96fce031c [2021-10-16 02:07:17,140 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:07:17,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2021-10-16 02:07:17,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/62880f7e2/d298bd23ef384d08863124e446563488/FLAG96fce031c [2021-10-16 02:07:17,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/62880f7e2/d298bd23ef384d08863124e446563488 [2021-10-16 02:07:17,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:07:17,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:07:17,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:07:17,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:07:17,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:07:17,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:07:17" (1/1) ... [2021-10-16 02:07:17,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376f7fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:17, skipping insertion in model container [2021-10-16 02:07:17,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:07:17" (1/1) ... [2021-10-16 02:07:17,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:07:17,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:07:17,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i[24291,24304] [2021-10-16 02:07:17,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:07:17,866 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:07:17,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i[24291,24304] [2021-10-16 02:07:17,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:07:18,027 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:07:18,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18 WrapperNode [2021-10-16 02:07:18,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:07:18,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:07:18,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:07:18,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:07:18,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:07:18,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:07:18,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:07:18,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:07:18,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:07:18,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:07:18,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:07:18,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:07:18,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (1/1) ... [2021-10-16 02:07:18,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:07:18,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:18,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:07:18,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:07:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:07:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:07:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:07:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:07:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:07:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:07:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:07:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:07:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:07:18,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:07:19,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:07:19,674 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 02:07:19,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:19 BoogieIcfgContainer [2021-10-16 02:07:19,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:07:19,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:07:19,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:07:19,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:07:19,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:07:17" (1/3) ... [2021-10-16 02:07:19,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b956214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:07:19, skipping insertion in model container [2021-10-16 02:07:19,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:18" (2/3) ... [2021-10-16 02:07:19,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b956214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:07:19, skipping insertion in model container [2021-10-16 02:07:19,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:19" (3/3) ... [2021-10-16 02:07:19,693 INFO L111 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-2.i [2021-10-16 02:07:19,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:07:19,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:07:19,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:07:19,765 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-16 02:07:19,766 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:07:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:07:19,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:19,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:19,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash 806321172, now seen corresponding path program 1 times [2021-10-16 02:07:19,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:19,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770947344] [2021-10-16 02:07:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:19,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:20,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:20,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770947344] [2021-10-16 02:07:20,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770947344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:20,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:20,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:07:20,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313110050] [2021-10-16 02:07:20,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:07:20,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:20,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:07:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:07:20,043 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-10-16 02:07:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:20,073 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2021-10-16 02:07:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:07:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) Word has length 13 [2021-10-16 02:07:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:20,085 INFO L225 Difference]: With dead ends: 63 [2021-10-16 02:07:20,085 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:07:20,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:07:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:07:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 02:07:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-10-16 02:07:20,129 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 13 [2021-10-16 02:07:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:20,130 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-16 02:07:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-10-16 02:07:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-10-16 02:07:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:07:20,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:20,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:20,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:07:20,133 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2142167200, now seen corresponding path program 1 times [2021-10-16 02:07:20,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:20,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910441375] [2021-10-16 02:07:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:20,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:20,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:20,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910441375] [2021-10-16 02:07:20,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910441375] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:20,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:20,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:07:20,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610781098] [2021-10-16 02:07:20,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:20,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:20,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:20,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:20,235 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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) [2021-10-16 02:07:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:20,275 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-10-16 02:07:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:20,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:07:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:20,278 INFO L225 Difference]: With dead ends: 47 [2021-10-16 02:07:20,278 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 02:07:20,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 02:07:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-10-16 02:07:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 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) [2021-10-16 02:07:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-16 02:07:20,286 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 18 [2021-10-16 02:07:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:20,287 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-16 02:07:20,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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) [2021-10-16 02:07:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-16 02:07:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:07:20,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:20,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:20,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:07:20,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:20,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:20,290 INFO L82 PathProgramCache]: Analyzing trace with hash -952198860, now seen corresponding path program 1 times [2021-10-16 02:07:20,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:20,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117720211] [2021-10-16 02:07:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:20,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:20,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:20,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117720211] [2021-10-16 02:07:20,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117720211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:20,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:20,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:07:20,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920524059] [2021-10-16 02:07:20,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:07:20,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:07:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:07:20,474 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-16 02:07:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:20,835 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2021-10-16 02:07:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:07:20,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 [2021-10-16 02:07:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:20,840 INFO L225 Difference]: With dead ends: 51 [2021-10-16 02:07:20,840 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 02:07:20,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 02:07:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2021-10-16 02:07:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-10-16 02:07:20,861 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 22 [2021-10-16 02:07:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:20,862 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-10-16 02:07:20,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-16 02:07:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-10-16 02:07:20,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:07:20,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:20,867 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:20,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:07:20,867 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:20,872 INFO L82 PathProgramCache]: Analyzing trace with hash -186390417, now seen corresponding path program 1 times [2021-10-16 02:07:20,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:20,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525791119] [2021-10-16 02:07:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:20,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:21,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:21,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525791119] [2021-10-16 02:07:21,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525791119] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:21,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:21,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:07:21,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265520693] [2021-10-16 02:07:21,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:07:21,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:21,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:07:21,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:07:21,062 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:21,412 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2021-10-16 02:07:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:07:21,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:07:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:21,414 INFO L225 Difference]: With dead ends: 53 [2021-10-16 02:07:21,414 INFO L226 Difference]: Without dead ends: 45 [2021-10-16 02:07:21,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-16 02:07:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-10-16 02:07:21,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2021-10-16 02:07:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-10-16 02:07:21,422 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 24 [2021-10-16 02:07:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:21,423 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-10-16 02:07:21,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-10-16 02:07:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:07:21,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:21,425 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:21,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:07:21,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 838312559, now seen corresponding path program 1 times [2021-10-16 02:07:21,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:21,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952242485] [2021-10-16 02:07:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:21,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:21,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952242485] [2021-10-16 02:07:21,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952242485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:21,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:21,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:07:21,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37197575] [2021-10-16 02:07:21,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:07:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:07:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:07:21,517 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:21,779 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2021-10-16 02:07:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:07:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:07:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:21,781 INFO L225 Difference]: With dead ends: 53 [2021-10-16 02:07:21,781 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 02:07:21,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 02:07:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2021-10-16 02:07:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-10-16 02:07:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-10-16 02:07:21,787 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 24 [2021-10-16 02:07:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:21,788 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-10-16 02:07:21,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:21,788 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-10-16 02:07:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:07:21,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:21,790 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:21,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:07:21,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:21,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2073124692, now seen corresponding path program 1 times [2021-10-16 02:07:21,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:21,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806216380] [2021-10-16 02:07:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:21,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:22,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:22,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806216380] [2021-10-16 02:07:22,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806216380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:07:22,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114166443] [2021-10-16 02:07:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:22,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:22,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:22,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:22,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:07:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:22,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-16 02:07:22,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:22,366 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 [2021-10-16 02:07:22,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:22,598 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:07:22,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-16 02:07:22,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:07:22,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:07:22,833 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:07:22,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:07:23,090 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:07:23,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:07:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:23,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:23,833 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~p~0.offset Int)) (= 2 (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset 3)) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) is different from false [2021-10-16 02:07:23,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:23,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:07:24,887 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_34 Int) (v_DerPreprocessor_1 Int)) (= 2 (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (+ c_ULTIMATE.start_main_~p~0.offset 4) v_DerPreprocessor_1)))) (store .cse0 c_ULTIMATE.start_main_~t~0.base (store (select .cse0 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_34 3))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) is different from false [2021-10-16 02:07:24,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 212 [2021-10-16 02:07:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2021-10-16 02:07:25,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114166443] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:25,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [756592195] [2021-10-16 02:07:25,373 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-10-16 02:07:25,373 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:07:25,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:07:25,402 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:07:25,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:07:25,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,472 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:07:25,475 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,476 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:07:25,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-16 02:07:25,478 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,480 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:07:25,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:07:25,482 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-16 02:07:25,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:07:25,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:07:25,487 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:07:25,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:07:25,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-10-16 02:07:25,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:07:25,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-10-16 02:07:25,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:07:25,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:07:25,554 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:07:25,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:25,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:25,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-10-16 02:07:25,596 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:07:25,599 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:182, output treesize:182 [2021-10-16 02:07:25,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:25,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-16 02:07:25,815 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_46| 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.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) [2021-10-16 02:07:25,818 INFO L168 Benchmark]: Toolchain (without parser) took 8441.90 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 67.0 MB in the beginning and 99.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:25,819 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:07:25,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.29 ms. Allocated memory is still 109.1 MB. Free memory was 66.8 MB in the beginning and 77.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:25,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.98 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 74.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:25,820 INFO L168 Benchmark]: Boogie Preprocessor took 97.86 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 72.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:25,821 INFO L168 Benchmark]: RCFGBuilder took 1441.58 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 72.8 MB in the beginning and 98.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:25,821 INFO L168 Benchmark]: TraceAbstraction took 6137.30 ms. Allocated memory is still 132.1 MB. Free memory was 98.1 MB in the beginning and 99.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:25,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 650.29 ms. Allocated memory is still 109.1 MB. Free memory was 66.8 MB in the beginning and 77.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.98 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 74.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.86 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 72.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1441.58 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 72.8 MB in the beginning and 98.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6137.30 ms. Allocated memory is still 132.1 MB. Free memory was 98.1 MB in the beginning and 99.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_46| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_46|: 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. [2021-10-16 02:07:25,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:07:28,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:07:28,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:07:29,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:07:29,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:07:29,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:07:29,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:07:29,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:07:29,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:07:29,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:07:29,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:07:29,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:07:29,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:07:29,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:07:29,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:07:29,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:07:29,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:07:29,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:07:29,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:07:29,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:07:29,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:07:29,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:07:29,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:07:29,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:07:29,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:07:29,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:07:29,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:07:29,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:07:29,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:07:29,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:07:29,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:07:29,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:07:29,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:07:29,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:07:29,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:07:29,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:07:29,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:07:29,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:07:29,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:07:29,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:07:29,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:07:29,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:07:29,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:07:29,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:07:29,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:07:29,233 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:07:29,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:07:29,234 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:07:29,234 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:07:29,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:07:29,235 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:07:29,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:07:29,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:07:29,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:07:29,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:07:29,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:07:29,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:07:29,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:07:29,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:07:29,241 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:07:29,241 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:07:29,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:07:29,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:07:29,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:07:29,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:07:29,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:07:29,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:07:29,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:07:29,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:07:29,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:07:29,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:07:29,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:07:29,245 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:07:29,246 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:29,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:07:29,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:07:29,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:07:29,247 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_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 356492c77ca30b45c8c64fdda8fe0cb19edee2c6 [2021-10-16 02:07:29,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:07:29,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:07:29,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:07:29,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:07:29,830 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:07:29,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2021-10-16 02:07:29,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/266d62562/f132a0d95d1642a59b3fdc88e30edda6/FLAGed71001db [2021-10-16 02:07:30,727 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:07:30,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i [2021-10-16 02:07:30,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/266d62562/f132a0d95d1642a59b3fdc88e30edda6/FLAGed71001db [2021-10-16 02:07:30,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/data/266d62562/f132a0d95d1642a59b3fdc88e30edda6 [2021-10-16 02:07:30,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:07:30,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:07:30,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:07:30,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:07:30,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:07:30,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:07:30" (1/1) ... [2021-10-16 02:07:30,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ec6994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:30, skipping insertion in model container [2021-10-16 02:07:30,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:07:30" (1/1) ... [2021-10-16 02:07:30,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:07:31,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:07:31,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i[24291,24304] [2021-10-16 02:07:31,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:07:31,493 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:07:31,566 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr-2.i[24291,24304] [2021-10-16 02:07:31,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:07:31,615 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:07:31,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31 WrapperNode [2021-10-16 02:07:31,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:07:31,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:07:31,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:07:31,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:07:31,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:07:31,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:07:31,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:07:31,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:07:31,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:07:31,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:07:31,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:07:31,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:07:31,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (1/1) ... [2021-10-16 02:07:31,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:07:31,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:31,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:07:31,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:07:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:07:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:07:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:07:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:07:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:07:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:07:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:07:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:07:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:07:31,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:07:32,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:07:32,858 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 02:07:32,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:32 BoogieIcfgContainer [2021-10-16 02:07:32,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:07:32,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:07:32,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:07:32,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:07:32,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:07:30" (1/3) ... [2021-10-16 02:07:32,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418c4581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:07:32, skipping insertion in model container [2021-10-16 02:07:32,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:31" (2/3) ... [2021-10-16 02:07:32,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418c4581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:07:32, skipping insertion in model container [2021-10-16 02:07:32,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:32" (3/3) ... [2021-10-16 02:07:32,871 INFO L111 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-2.i [2021-10-16 02:07:32,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:07:32,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:07:32,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:07:32,972 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-16 02:07:32,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:07:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:07:33,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:33,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:33,015 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1882534868, now seen corresponding path program 1 times [2021-10-16 02:07:33,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:33,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964487345] [2021-10-16 02:07:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:33,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:33,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:33,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:33,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:07:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:33,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:07:33,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:33,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:33,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:33,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964487345] [2021-10-16 02:07:33,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964487345] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:33,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:33,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:07:33,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460402094] [2021-10-16 02:07:33,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:07:33,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:07:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:07:33,489 INFO L87 Difference]: Start difference. First operand has 45 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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) [2021-10-16 02:07:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:33,516 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2021-10-16 02:07:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:07:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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) Word has length 16 [2021-10-16 02:07:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:33,529 INFO L225 Difference]: With dead ends: 88 [2021-10-16 02:07:33,530 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 02:07:33,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:07:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 02:07:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-16 02:07:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2021-10-16 02:07:33,579 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 16 [2021-10-16 02:07:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:33,580 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2021-10-16 02:07:33,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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) [2021-10-16 02:07:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2021-10-16 02:07:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:07:33,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:33,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:33,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:33,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:33,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:33,801 INFO L82 PathProgramCache]: Analyzing trace with hash -509442169, now seen corresponding path program 1 times [2021-10-16 02:07:33,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:33,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671440285] [2021-10-16 02:07:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:33,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:33,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:33,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:33,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:07:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:33,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:07:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:34,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:34,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:34,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671440285] [2021-10-16 02:07:34,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671440285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:34,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:34,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:07:34,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093385669] [2021-10-16 02:07:34,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:34,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:34,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:34,160 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-16 02:07:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:34,211 INFO L93 Difference]: Finished difference Result 64 states and 88 transitions. [2021-10-16 02:07:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:34,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:07:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:34,218 INFO L225 Difference]: With dead ends: 64 [2021-10-16 02:07:34,219 INFO L226 Difference]: Without dead ends: 46 [2021-10-16 02:07:34,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-16 02:07:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-16 02:07:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 66 transitions. [2021-10-16 02:07:34,249 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 66 transitions. Word has length 18 [2021-10-16 02:07:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:34,251 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 66 transitions. [2021-10-16 02:07:34,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-16 02:07:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 66 transitions. [2021-10-16 02:07:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:07:34,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:34,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:34,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:34,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:34,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash 610466292, now seen corresponding path program 1 times [2021-10-16 02:07:34,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:34,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572078556] [2021-10-16 02:07:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:34,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:34,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:34,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:34,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:07:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:34,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:07:34,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:34,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:34,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:34,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572078556] [2021-10-16 02:07:34,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572078556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:34,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:34,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:07:34,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569266810] [2021-10-16 02:07:34,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:34,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:34,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:34,931 INFO L87 Difference]: Start difference. First operand 46 states and 66 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:34,987 INFO L93 Difference]: Finished difference Result 82 states and 118 transitions. [2021-10-16 02:07:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:07:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:34,998 INFO L225 Difference]: With dead ends: 82 [2021-10-16 02:07:34,998 INFO L226 Difference]: Without dead ends: 48 [2021-10-16 02:07:34,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-16 02:07:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-16 02:07:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 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) [2021-10-16 02:07:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2021-10-16 02:07:35,020 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 24 [2021-10-16 02:07:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:35,021 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-10-16 02:07:35,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2021-10-16 02:07:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:07:35,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:35,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:35,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:35,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:35,225 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:35,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1383678414, now seen corresponding path program 1 times [2021-10-16 02:07:35,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:35,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70989021] [2021-10-16 02:07:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:35,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:35,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:35,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:07:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:35,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:07:35,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:35,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:35,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:07:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:35,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:35,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 02:07:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:35,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:35,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70989021] [2021-10-16 02:07:35,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70989021] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:35,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:35,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:07:35,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320950377] [2021-10-16 02:07:35,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:07:35,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:07:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:07:35,859 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:36,336 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2021-10-16 02:07:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:07:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:07:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:36,338 INFO L225 Difference]: With dead ends: 71 [2021-10-16 02:07:36,339 INFO L226 Difference]: Without dead ends: 67 [2021-10-16 02:07:36,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-16 02:07:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2021-10-16 02:07:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 54 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2021-10-16 02:07:36,350 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 24 [2021-10-16 02:07:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:36,351 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2021-10-16 02:07:36,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2021-10-16 02:07:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:07:36,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:36,354 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:36,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:36,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:36,571 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:36,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1773585421, now seen corresponding path program 1 times [2021-10-16 02:07:36,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:36,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462111717] [2021-10-16 02:07:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:36,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:36,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:36,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:36,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:07:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:36,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:07:36,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:36,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:36,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:07:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:36,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:37,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-16 02:07:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:37,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:37,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462111717] [2021-10-16 02:07:37,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462111717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:37,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:37,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:07:37,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298186777] [2021-10-16 02:07:37,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:07:37,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:07:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:37,122 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:37,688 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2021-10-16 02:07:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:07:37,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:07:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:37,690 INFO L225 Difference]: With dead ends: 73 [2021-10-16 02:07:37,690 INFO L226 Difference]: Without dead ends: 65 [2021-10-16 02:07:37,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:07:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-16 02:07:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2021-10-16 02:07:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 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) [2021-10-16 02:07:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 75 transitions. [2021-10-16 02:07:37,700 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 75 transitions. Word has length 26 [2021-10-16 02:07:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:37,701 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 75 transitions. [2021-10-16 02:07:37,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 75 transitions. [2021-10-16 02:07:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:07:37,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:37,703 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:37,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:37,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:37,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1496678899, now seen corresponding path program 1 times [2021-10-16 02:07:37,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:37,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023799997] [2021-10-16 02:07:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:37,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:37,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:37,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:37,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:07:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:38,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:07:38,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:38,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:38,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:07:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:38,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:38,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-16 02:07:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:38,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:38,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023799997] [2021-10-16 02:07:38,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023799997] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:38,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:38,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:07:38,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265417099] [2021-10-16 02:07:38,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:07:38,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:07:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:38,432 INFO L87 Difference]: Start difference. First operand 53 states and 75 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-16 02:07:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:38,991 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2021-10-16 02:07:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:07:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 26 [2021-10-16 02:07:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:38,993 INFO L225 Difference]: With dead ends: 73 [2021-10-16 02:07:38,993 INFO L226 Difference]: Without dead ends: 62 [2021-10-16 02:07:38,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:07:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-16 02:07:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-10-16 02:07:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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) [2021-10-16 02:07:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 71 transitions. [2021-10-16 02:07:39,001 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 71 transitions. Word has length 26 [2021-10-16 02:07:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:39,002 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 71 transitions. [2021-10-16 02:07:39,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-16 02:07:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 71 transitions. [2021-10-16 02:07:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:07:39,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:39,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:39,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:39,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:39,215 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:39,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1846820767, now seen corresponding path program 1 times [2021-10-16 02:07:39,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:39,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188173505] [2021-10-16 02:07:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:39,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:39,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:39,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:39,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:07:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:39,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:07:39,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:39,499 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 [2021-10-16 02:07:39,621 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:07:39,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 02:07:39,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:39,765 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-16 02:07:39,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:07:39,866 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:07:39,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:07:40,078 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:07:40,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:07:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:40,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:42,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~p~0.offset (_ BitVec 32))) (= (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset (_ bv3 32))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset) (_ bv2 32))) is different from false [2021-10-16 02:07:42,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:42,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:07:44,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 115 [2021-10-16 02:07:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-10-16 02:07:45,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:45,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188173505] [2021-10-16 02:07:45,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188173505] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:45,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1908620681] [2021-10-16 02:07:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:45,228 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:45,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:45,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:45,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:07:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:45,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:07:45,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:45,648 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 [2021-10-16 02:07:45,871 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:07:45,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-10-16 02:07:45,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:07:46,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:07:46,126 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:07:46,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:07:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:46,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:46,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:46,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:07:52,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 215 [2021-10-16 02:07:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-10-16 02:07:53,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1908620681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:53,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418831109] [2021-10-16 02:07:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:53,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:53,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:53,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:53,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:07:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:53,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:07:53,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:53,574 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 [2021-10-16 02:07:53,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:07:53,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:07:53,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 02:07:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:07:53,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:07:53,890 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:07:53,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:07:54,062 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:07:54,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:07:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:07:54,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:54,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:07:54,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:07:58,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2021-10-16 02:07:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-10-16 02:07:58,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418831109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:58,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:07:58,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 18 [2021-10-16 02:07:58,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475607864] [2021-10-16 02:07:58,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 02:07:58,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 02:07:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=220, Unknown=2, NotChecked=30, Total=306 [2021-10-16 02:07:58,639 INFO L87 Difference]: Start difference. First operand 50 states and 71 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:17,520 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2021-10-16 02:08:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:08:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-16 02:08:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:17,523 INFO L225 Difference]: With dead ends: 68 [2021-10-16 02:08:17,523 INFO L226 Difference]: Without dead ends: 64 [2021-10-16 02:08:17,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 126 SyntacticMatches, 15 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 18033.7ms TimeCoverageRelationStatistics Valid=96, Invalid=368, Unknown=2, NotChecked=40, Total=506 [2021-10-16 02:08:17,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-16 02:08:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-10-16 02:08:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 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) [2021-10-16 02:08:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2021-10-16 02:08:17,532 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 27 [2021-10-16 02:08:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:17,532 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2021-10-16 02:08:17,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2021-10-16 02:08:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:08:17,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:17,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:17,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:17,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-16 02:08:17,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-16 02:08:18,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:18,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:18,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2070591548, now seen corresponding path program 1 times [2021-10-16 02:08:18,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:18,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004715655] [2021-10-16 02:08:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:18,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:18,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:18,154 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:18,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:08:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:18,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:08:18,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:18,535 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 [2021-10-16 02:08:18,637 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:08:18,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-16 02:08:18,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:08:18,775 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-16 02:08:18,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:08:18,890 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:08:18,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:08:18,980 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:08:18,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:08:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:08:19,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:29,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:29,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:08:31,237 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_58 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (= (_ bv1 32) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_4)))) (store .cse0 c_ULTIMATE.start_main_~t~0.base (store (select .cse0 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_58 (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) is different from false [2021-10-16 02:08:31,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2021-10-16 02:08:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:08:33,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:33,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004715655] [2021-10-16 02:08:33,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004715655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:33,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [385653459] [2021-10-16 02:08:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:33,589 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:33,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:08:33,597 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:08:33,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:08:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:08:34,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:34,131 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 [2021-10-16 02:08:34,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:08:34,388 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:08:34,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 02:08:34,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:34,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:08:34,700 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:08:34,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:08:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:08:34,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:35,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:35,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:08:39,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2021-10-16 02:08:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:08:39,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [385653459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:39,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492726689] [2021-10-16 02:08:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:39,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:39,635 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:39,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:08:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:39,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:08:39,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:40,041 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 [2021-10-16 02:08:40,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:08:40,194 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:08:40,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 02:08:40,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:40,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:08:40,359 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:08:40,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:08:40,460 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:08:40,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:08:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:08:40,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:40,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:40,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:08:46,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 214 [2021-10-16 02:08:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:08:49,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492726689] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:49,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:08:49,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-10-16 02:08:49,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410524905] [2021-10-16 02:08:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:08:49,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:08:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=244, Unknown=8, NotChecked=32, Total=342 [2021-10-16 02:08:49,220 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:19,503 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2021-10-16 02:09:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:09:19,505 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-16 02:09:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:19,506 INFO L225 Difference]: With dead ends: 83 [2021-10-16 02:09:19,506 INFO L226 Difference]: Without dead ends: 77 [2021-10-16 02:09:19,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 127 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 30127.4ms TimeCoverageRelationStatistics Valid=119, Invalid=429, Unknown=8, NotChecked=44, Total=600 [2021-10-16 02:09:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-16 02:09:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2021-10-16 02:09:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 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) [2021-10-16 02:09:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2021-10-16 02:09:19,517 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 27 [2021-10-16 02:09:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:19,517 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2021-10-16 02:09:19,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2021-10-16 02:09:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:09:19,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:19,520 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:19,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-16 02:09:19,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:19,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:20,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:09:20,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:20,124 INFO L82 PathProgramCache]: Analyzing trace with hash -924584324, now seen corresponding path program 1 times [2021-10-16 02:09:20,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:20,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513860925] [2021-10-16 02:09:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:20,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:20,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:20,126 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:20,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:09:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:20,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:09:20,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:20,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:09:20,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:09:20,855 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:09:20,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 75 [2021-10-16 02:09:20,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2021-10-16 02:09:20,892 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:09:20,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2021-10-16 02:09:21,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:09:21,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-10-16 02:09:21,222 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:21,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2021-10-16 02:09:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:21,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:21,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 111 [2021-10-16 02:09:21,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 02:09:21,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 02:09:21,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 123 [2021-10-16 02:09:21,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 257 [2021-10-16 02:09:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:22,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:22,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513860925] [2021-10-16 02:09:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513860925] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:22,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1829798828] [2021-10-16 02:09:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:22,606 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:22,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:09:22,610 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:09:22,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 02:09:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:23,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:09:23,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:23,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:09:23,536 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:23,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-16 02:09:23,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 02:09:23,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:09:23,903 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:09:23,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 79 [2021-10-16 02:09:23,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2021-10-16 02:09:23,941 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:09:23,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 52 [2021-10-16 02:09:24,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-10-16 02:09:24,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-10-16 02:09:24,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:09:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:24,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:24,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 77 [2021-10-16 02:09:24,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:24,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:09:24,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:24,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:09:24,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 77 [2021-10-16 02:09:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:24,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:29,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1829798828] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:29,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407483483] [2021-10-16 02:09:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:29,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:09:29,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:09:29,390 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:09:29,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 02:09:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:29,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:09:29,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:29,890 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 [2021-10-16 02:09:30,044 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:30,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-16 02:09:30,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:09:30,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 02:09:30,404 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:09:30,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 72 [2021-10-16 02:09:30,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-10-16 02:09:30,431 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:09:30,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2021-10-16 02:09:30,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-16 02:09:30,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-16 02:09:30,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:09:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:30,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:30,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 77 [2021-10-16 02:09:30,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:30,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:09:30,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:30,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:09:30,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 188 [2021-10-16 02:09:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:31,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:31,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:09:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:35,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407483483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:35,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:09:35,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9, 9, 9, 9] total 34 [2021-10-16 02:09:35,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701920039] [2021-10-16 02:09:35,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-16 02:09:35,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-16 02:09:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=945, Unknown=4, NotChecked=0, Total=1122 [2021-10-16 02:09:35,553 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 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) [2021-10-16 02:09:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:41,283 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2021-10-16 02:09:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-16 02:09:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 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 29 [2021-10-16 02:09:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:41,285 INFO L225 Difference]: With dead ends: 105 [2021-10-16 02:09:41,285 INFO L226 Difference]: Without dead ends: 89 [2021-10-16 02:09:41,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 11699.7ms TimeCoverageRelationStatistics Valid=459, Invalid=1987, Unknown=4, NotChecked=0, Total=2450 [2021-10-16 02:09:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-16 02:09:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-10-16 02:09:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 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) [2021-10-16 02:09:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2021-10-16 02:09:41,297 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 29 [2021-10-16 02:09:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:41,298 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2021-10-16 02:09:41,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 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) [2021-10-16 02:09:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2021-10-16 02:09:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:09:41,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:41,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:41,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:41,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:41,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:41,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:41,927 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1188172311, now seen corresponding path program 1 times [2021-10-16 02:09:41,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:41,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884415853] [2021-10-16 02:09:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:41,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:41,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:41,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:09:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:42,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:09:42,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:42,611 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 [2021-10-16 02:09:42,745 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:42,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-16 02:09:42,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:09:42,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:42,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:09:42,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-10-16 02:09:43,138 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-16 02:09:43,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-10-16 02:09:43,361 INFO L354 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2021-10-16 02:09:43,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2021-10-16 02:09:44,480 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:09:44,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:09:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:44,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:44,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:44,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-16 02:09:46,825 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (ULTIMATE.start_main_~t~0.base (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_13)))) (store .cse1 ULTIMATE.start_main_~t~0.base (store (select .cse1 ULTIMATE.start_main_~t~0.base) c_ULTIMATE.start_main_~t~0.offset (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv1 32)) (= (_ bv3 32) .cse0)))) is different from false [2021-10-16 02:09:48,905 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~p~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (ULTIMATE.start_main_~t~0.base (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset (_ bv2 32)) (bvadd ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_13)))) (store .cse1 ULTIMATE.start_main_~t~0.base (store (select .cse1 ULTIMATE.start_main_~t~0.base) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv3 32)) (= .cse0 (_ bv1 32))))) is different from false [2021-10-16 02:09:48,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:48,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-16 02:09:50,985 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~t~0.base_37 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_99 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_14)))) (store .cse2 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse2 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_99 (_ bv2 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_99 (_ bv4 32)) v_DerPreprocessor_13))))) (store .cse1 v_ULTIMATE.start_main_~t~0.base_37 (store (select .cse1 v_ULTIMATE.start_main_~t~0.base_37) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv3 32)) (= .cse0 (_ bv1 32))))) is different from false [2021-10-16 02:09:51,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 968 treesize of output 960 [2021-10-16 02:09:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2021-10-16 02:09:57,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:57,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884415853] [2021-10-16 02:09:57,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884415853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:57,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333024838] [2021-10-16 02:09:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:57,080 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:57,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:09:57,081 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:09:57,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 02:09:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:57,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:09:57,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:57,793 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 [2021-10-16 02:09:57,889 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:57,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-16 02:09:57,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:09:57,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:57,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:09:58,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-10-16 02:09:58,190 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-16 02:09:58,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 34 [2021-10-16 02:09:58,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-10-16 02:09:58,412 INFO L354 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2021-10-16 02:09:58,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2021-10-16 02:09:59,218 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:09:59,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:09:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:09:59,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:59,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2021-10-16 02:09:59,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:59,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-16 02:10:01,379 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_95 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_15)))) (store .cse1 v_arrayElimCell_95 (store (select .cse1 v_arrayElimCell_95) c_ULTIMATE.start_main_~t~0.offset (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv3 32)) (= .cse0 (_ bv1 32))))) is different from false [2021-10-16 02:10:03,438 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~p~0.offset (_ BitVec 32)) (v_arrayElimCell_95 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset (_ bv2 32)) (bvadd ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_15)))) (store .cse1 v_arrayElimCell_95 (store (select .cse1 v_arrayElimCell_95) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv1 32)) (= (_ bv3 32) .cse0)))) is different from false [2021-10-16 02:10:03,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:03,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-16 02:10:05,507 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_95 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_107 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_16)))) (store .cse2 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse2 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_107 (_ bv2 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_107 (_ bv4 32)) v_DerPreprocessor_15))))) (store .cse1 v_arrayElimCell_95 (store (select .cse1 v_arrayElimCell_95) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv1 32)) (= .cse0 (_ bv3 32))))) is different from false [2021-10-16 02:10:05,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14317 treesize of output 14189 [2021-10-16 02:10:06,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:10:06,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960104131] [2021-10-16 02:10:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:06,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:10:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:10:06,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:10:06,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 02:10:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:06,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:10:06,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:06,828 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 [2021-10-16 02:10:06,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:10:06,939 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:10:06,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-10-16 02:10:07,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:10:07,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:10:07,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-10-16 02:10:07,208 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-16 02:10:07,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-10-16 02:10:07,428 INFO L354 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2021-10-16 02:10:07,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2021-10-16 02:10:08,253 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:10:08,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:10:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:10:08,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:10,331 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~p~0.base (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_int| ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset (_ bv3 32))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv1 32)) (= .cse0 (_ bv3 32))))) is different from false [2021-10-16 02:10:10,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:10,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-16 02:10:12,391 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_105 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_17)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_105 (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_105) c_ULTIMATE.start_main_~t~0.offset (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= (_ bv3 32) .cse0) (= (_ bv1 32) .cse0)))) is different from false [2021-10-16 02:10:14,452 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~p~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_105 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset (_ bv2 32)) (bvadd ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_17)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_105 (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_105) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= (_ bv1 32) .cse0) (= (_ bv3 32) .cse0)))) is different from false [2021-10-16 02:10:14,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:14,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-16 02:10:16,532 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_114 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_105 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_18)))) (store .cse2 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse2 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_114 (_ bv2 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_114 (_ bv4 32)) v_DerPreprocessor_17))))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_105 (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_105) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv1 32)) (= .cse0 (_ bv3 32))))) is different from false [2021-10-16 02:10:16,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6935 treesize of output 6871 [2021-10-16 02:10:16,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:10:16,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:10:16,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-16 02:10:16,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604454125] [2021-10-16 02:10:16,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-16 02:10:16,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-16 02:10:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=260, Unknown=11, NotChecked=410, Total=756 [2021-10-16 02:10:16,920 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:20,448 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~a~0.base)))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~t~0.base c_ULTIMATE.start_main_~a~0.base)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset) (_ bv1 32)) (= c_ULTIMATE.start_main_~p~0.offset c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~p~0.base c_ULTIMATE.start_main_~a~0.base) (forall ((v_ULTIMATE.start_main_~t~0.base_37 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_99 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_14)))) (store .cse2 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse2 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_99 (_ bv2 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_99 (_ bv4 32)) v_DerPreprocessor_13))))) (store .cse1 v_ULTIMATE.start_main_~t~0.base_37 (store (select .cse1 v_ULTIMATE.start_main_~t~0.base_37) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv3 32)) (= .cse0 (_ bv1 32)))))) is different from false [2021-10-16 02:10:22,496 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (not (= c_ULTIMATE.start_main_~t~0.base c_ULTIMATE.start_main_~a~0.base)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset) (_ bv1 32)) (= c_ULTIMATE.start_main_~p~0.offset c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~p~0.base c_ULTIMATE.start_main_~a~0.base) (forall ((v_ULTIMATE.start_main_~t~0.base_37 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_99 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_14)))) (store .cse2 c_ULTIMATE.start_main_~t~0.base (store (store (select .cse2 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_99 (_ bv2 32)) (bvadd v_ULTIMATE.start_main_~p~0.offset_99 (_ bv4 32)) v_DerPreprocessor_13))))) (store .cse1 v_ULTIMATE.start_main_~t~0.base_37 (store (select .cse1 v_ULTIMATE.start_main_~t~0.base_37) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv3 32)) (= .cse0 (_ bv1 32)))))) is different from false [2021-10-16 02:10:24,507 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)) (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (forall ((ULTIMATE.start_main_~p~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (ULTIMATE.start_main_~t~0.base (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset (_ bv2 32)) (bvadd ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_13)))) (store .cse1 ULTIMATE.start_main_~t~0.base (store (select .cse1 ULTIMATE.start_main_~t~0.base) (_ bv0 32) (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv3 32)) (= .cse0 (_ bv1 32))))) (not (= c_ULTIMATE.start_main_~p~0.base c_ULTIMATE.start_main_~a~0.base))) is different from false [2021-10-16 02:10:26,606 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)) (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (ULTIMATE.start_main_~t~0.base (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_13)))) (store .cse1 ULTIMATE.start_main_~t~0.base (store (select .cse1 ULTIMATE.start_main_~t~0.base) c_ULTIMATE.start_main_~t~0.offset (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse0 (_ bv1 32)) (= (_ bv3 32) .cse0)))) (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~t~0.offset (_ bv0 32)) (= (_ bv2 32) (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset)) (not (= c_ULTIMATE.start_main_~p~0.base c_ULTIMATE.start_main_~a~0.base))) is different from false [2021-10-16 02:10:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:27,589 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2021-10-16 02:10:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:10:27,590 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:10:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:27,592 INFO L225 Difference]: With dead ends: 123 [2021-10-16 02:10:27,592 INFO L226 Difference]: Without dead ends: 119 [2021-10-16 02:10:27,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 31375.3ms TimeCoverageRelationStatistics Valid=116, Invalid=387, Unknown=15, NotChecked=742, Total=1260 [2021-10-16 02:10:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-16 02:10:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 71. [2021-10-16 02:10:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 70 states have internal predecessors, (97), 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) [2021-10-16 02:10:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2021-10-16 02:10:27,607 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 30 [2021-10-16 02:10:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:27,607 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2021-10-16 02:10:27,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2021-10-16 02:10:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:10:27,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:27,610 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:10:27,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:27,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:28,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-16 02:10:28,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:28,214 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:10:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1496840745, now seen corresponding path program 1 times [2021-10-16 02:10:28,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:10:28,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819337142] [2021-10-16 02:10:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:28,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:10:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:10:28,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:10:28,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:10:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:28,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:10:28,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:29,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:10:29,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:10:29,191 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:10:29,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 75 [2021-10-16 02:10:29,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2021-10-16 02:10:29,232 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:10:29,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2021-10-16 02:10:29,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:10:29,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-10-16 02:10:29,491 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:10:29,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2021-10-16 02:10:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:10:29,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:29,812 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-10-16 02:10:29,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 67 [2021-10-16 02:10:29,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:29,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-16 02:10:29,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:29,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:10:30,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 123 [2021-10-16 02:10:30,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 146 [2021-10-16 02:10:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:10:30,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:30,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819337142] [2021-10-16 02:10:30,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819337142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:30,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [127785847] [2021-10-16 02:10:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:30,480 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:10:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:10:30,482 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:10:30,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-16 02:10:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:31,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:10:31,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:31,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:10:31,563 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:10:31,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-16 02:10:31,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:10:31,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:10:31,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 02:10:31,924 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:10:31,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:10:32,060 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:10:32,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-16 02:10:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:10:32,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:34,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:34,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-16 02:10:44,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 180 [2021-10-16 02:10:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:10:46,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [127785847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:46,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605638063] [2021-10-16 02:10:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:46,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:10:46,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:10:46,663 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:10:46,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-16 02:10:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:47,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:10:47,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:47,400 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 [2021-10-16 02:10:47,526 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:10:47,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-16 02:10:47,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 02:10:47,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:10:47,833 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:10:47,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 72 [2021-10-16 02:10:47,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-10-16 02:10:47,862 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 02:10:47,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2021-10-16 02:10:47,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-16 02:10:47,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-16 02:10:48,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:10:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:10:48,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:48,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 56 [2021-10-16 02:10:48,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:48,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:10:48,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:48,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:10:48,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 188 [2021-10-16 02:10:48,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:10:48,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:10:48,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:10:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:10:55,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605638063] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:55,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:10:55,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8, 7, 9, 9] total 36 [2021-10-16 02:10:55,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217347715] [2021-10-16 02:10:55,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-16 02:10:55,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-16 02:10:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1092, Unknown=7, NotChecked=0, Total=1260 [2021-10-16 02:10:55,045 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:11:01,821 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (forall ((ULTIMATE.start_main_~p~0.offset (_ BitVec 32))) (not (= (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset (_ bv3 32))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~a~0.base))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-10-16 02:11:06,794 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (and (= c_ULTIMATE.start_main_~p~0.offset c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~p~0.base c_ULTIMATE.start_main_~a~0.base)))) (and (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_129 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32)) v_DerPreprocessor_21)))) (store .cse0 c_ULTIMATE.start_main_~t~0.base (store (select .cse0 c_ULTIMATE.start_main_~t~0.base) v_ULTIMATE.start_main_~p~0.offset_129 (_ bv3 32)))) c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))) (or .cse1 (forall ((v_ULTIMATE.start_main_~t~0.base_46 (_ BitVec 32))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~t~0.base_46))))))) (not (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset) (_ bv1 32))) (or .cse1 (and (forall ((v_DerPreprocessor_20 (_ BitVec 32))) (= c_ULTIMATE.start_main_~p~0.offset (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset v_DerPreprocessor_20)) c_ULTIMATE.start_main_~a~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)))) (forall ((v_DerPreprocessor_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~p~0.base (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset v_DerPreprocessor_19)) c_ULTIMATE.start_main_~a~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)))))))) is different from false [2021-10-16 02:11:29,363 WARN L207 SmtUtils]: Spent 18.08 s on a formula simplification that was a NOOP. DAG size: 40 [2021-10-16 02:11:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:11:36,081 INFO L93 Difference]: Finished difference Result 124 states and 159 transitions. [2021-10-16 02:11:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-16 02:11:36,082 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 02:11:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:11:36,083 INFO L225 Difference]: With dead ends: 124 [2021-10-16 02:11:36,083 INFO L226 Difference]: Without dead ends: 106 [2021-10-16 02:11:36,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 49689.0ms TimeCoverageRelationStatistics Valid=412, Invalid=2035, Unknown=11, NotChecked=194, Total=2652 [2021-10-16 02:11:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-16 02:11:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2021-10-16 02:11:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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) [2021-10-16 02:11:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2021-10-16 02:11:36,092 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 31 [2021-10-16 02:11:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:11:36,093 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2021-10-16 02:11:36,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:11:36,093 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2021-10-16 02:11:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:11:36,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:11:36,095 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:11:36,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:36,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:36,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:36,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:11:36,703 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:11:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:11:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1786512979, now seen corresponding path program 2 times [2021-10-16 02:11:36,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:11:36,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896149796] [2021-10-16 02:11:36,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:11:36,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:11:36,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:11:36,706 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:11:36,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:11:37,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:11:37,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:11:37,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:11:37,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:37,557 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 [2021-10-16 02:11:37,732 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:11:37,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-10-16 02:11:37,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-10-16 02:11:37,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:11:38,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:11:38,097 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-10-16 02:11:38,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-10-16 02:11:38,144 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:11:38,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2021-10-16 02:11:38,185 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:11:38,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-10-16 02:11:38,404 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-16 02:11:38,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 133 [2021-10-16 02:11:38,438 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-16 02:11:38,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 156 [2021-10-16 02:11:38,465 INFO L354 Elim1Store]: treesize reduction 75, result has 20.2 percent of original size [2021-10-16 02:11:38,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 146 [2021-10-16 02:11:38,789 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-16 02:11:38,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 153 [2021-10-16 02:11:38,848 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-10-16 02:11:38,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 146 [2021-10-16 02:11:38,894 INFO L354 Elim1Store]: treesize reduction 105, result has 12.5 percent of original size [2021-10-16 02:11:38,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 119 [2021-10-16 02:11:39,324 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-16 02:11:39,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 74 [2021-10-16 02:11:39,336 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:11:39,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 45 [2021-10-16 02:11:39,555 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-10-16 02:11:39,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-10-16 02:11:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:11:39,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:39,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:39,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:11:39,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:39,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:11:40,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:40,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-16 02:11:41,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:41,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-10-16 02:11:42,211 INFO L354 Elim1Store]: treesize reduction 4, result has 95.3 percent of original size [2021-10-16 02:11:42,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3964 treesize of output 3729 [2021-10-16 02:11:42,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:42,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2729 [2021-10-16 02:11:52,448 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_ULTIMATE.start_main_~t~0.base_50 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32))) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset))) (let ((.cse1 (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset v_DerPreprocessor_27) .cse3 v_ULTIMATE.start_main_~t~0.base_50)))) (store .cse5 v_ULTIMATE.start_main_~t~0.base_50 (store (select .cse5 v_ULTIMATE.start_main_~t~0.base_50) (_ bv0 32) v_DerPreprocessor_24))) c_ULTIMATE.start_main_~a~0.base) .cse4)) (.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset v_DerPreprocessor_28) .cse3 (_ bv0 32))))) (store .cse2 v_ULTIMATE.start_main_~t~0.base_50 (store (select .cse2 v_ULTIMATE.start_main_~t~0.base_50) (_ bv0 32) v_DerPreprocessor_25))) c_ULTIMATE.start_main_~a~0.base) .cse4))) (or (and (= .cse0 c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~a~0.base .cse1)) (and (= c_ULTIMATE.start_main_~p~0.base .cse1) (= c_ULTIMATE.start_main_~p~0.offset .cse0) (or (not (= v_ULTIMATE.start_main_~t~0.base_50 .cse1)) (not (= .cse0 (_ bv0 32))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~t~0.base_50))))) (and (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~a~0.base v_ULTIMATE.start_main_~t~0.base_50)))))) is different from false [2021-10-16 02:11:52,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2697 treesize of output 2661 [2021-10-16 02:11:52,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11963 treesize of output 11819 [2021-10-16 02:11:53,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:11:53,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896149796] [2021-10-16 02:11:53,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:11:53,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1277987339] [2021-10-16 02:11:53,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:11:53,245 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:11:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:11:53,246 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:11:53,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-16 02:11:54,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:11:54,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:11:54,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-16 02:11:54,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:54,270 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 [2021-10-16 02:11:54,395 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:54,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-10-16 02:11:54,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 02:11:54,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:11:54,751 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:11:54,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2021-10-16 02:11:54,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:11:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:11:54,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2021-10-16 02:11:55,028 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-16 02:11:55,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 134 [2021-10-16 02:11:55,059 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-16 02:11:55,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 121 [2021-10-16 02:11:55,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 75 [2021-10-16 02:11:55,423 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-16 02:11:55,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 106 [2021-10-16 02:11:55,472 INFO L354 Elim1Store]: treesize reduction 53, result has 33.8 percent of original size [2021-10-16 02:11:55,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 135 [2021-10-16 02:11:55,526 INFO L354 Elim1Store]: treesize reduction 128, result has 12.9 percent of original size [2021-10-16 02:11:55,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 105 [2021-10-16 02:11:56,147 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:11:56,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 61 [2021-10-16 02:11:56,154 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:11:56,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2021-10-16 02:11:56,735 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:56,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2021-10-16 02:11:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:11:56,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:57,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:57,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-16 02:11:57,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:57,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-16 02:12:00,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:00,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-10-16 02:12:43,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:43,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-10-16 02:12:44,177 INFO L354 Elim1Store]: treesize reduction 4, result has 95.3 percent of original size [2021-10-16 02:12:44,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4249 treesize of output 4010 [2021-10-16 02:12:44,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:44,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3115 [2021-10-16 02:13:46,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20086 treesize of output 19798 [2021-10-16 02:13:47,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18917 treesize of output 18881 [2021-10-16 02:13:47,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:13:47,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037103272] [2021-10-16 02:13:47,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:13:47,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:13:47,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:13:47,725 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:13:47,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-16 02:13:48,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:13:48,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:13:48,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 02:13:48,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:48,574 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 [2021-10-16 02:13:48,695 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:13:48,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-10-16 02:13:48,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:13:48,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-10-16 02:13:49,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:13:49,269 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:13:49,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2021-10-16 02:13:49,307 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:13:49,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 52 [2021-10-16 02:13:49,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-10-16 02:13:49,651 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-16 02:13:49,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 142 [2021-10-16 02:13:49,679 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-16 02:13:49,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 159 [2021-10-16 02:13:49,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 109 [2021-10-16 02:13:50,158 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-16 02:13:50,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 110 [2021-10-16 02:13:50,187 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-10-16 02:13:50,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 139 [2021-10-16 02:13:50,235 INFO L354 Elim1Store]: treesize reduction 128, result has 12.9 percent of original size [2021-10-16 02:13:50,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 109 [2021-10-16 02:13:50,846 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:13:50,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 57 [2021-10-16 02:13:50,853 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:13:50,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 39 [2021-10-16 02:13:51,158 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:13:51,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 25 [2021-10-16 02:13:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:13:51,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:51,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:51,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:13:51,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:51,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:13:51,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:51,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-16 02:13:52,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:52,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-16 02:13:52,903 INFO L354 Elim1Store]: treesize reduction 4, result has 95.3 percent of original size [2021-10-16 02:13:52,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2253 treesize of output 2170 [2021-10-16 02:13:52,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:52,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2217 [2021-10-16 02:14:03,171 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_ULTIMATE.start_main_~t~0.base_53 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~p~0.offset (_ bv4 32))) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset v_DerPreprocessor_37) .cse3 v_ULTIMATE.start_main_~t~0.base_53)))) (store .cse5 v_ULTIMATE.start_main_~t~0.base_53 (store (select .cse5 v_ULTIMATE.start_main_~t~0.base_53) (_ bv0 32) v_DerPreprocessor_24))) c_ULTIMATE.start_main_~a~0.base) .cse4)) (.cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~p~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~p~0.base) c_ULTIMATE.start_main_~p~0.offset v_DerPreprocessor_38) .cse3 (_ bv0 32))))) (store .cse2 v_ULTIMATE.start_main_~t~0.base_53 (store (select .cse2 v_ULTIMATE.start_main_~t~0.base_53) (_ bv0 32) v_DerPreprocessor_25))) c_ULTIMATE.start_main_~a~0.base) .cse4))) (or (and (= (_ bv0 32) c_ULTIMATE.start_main_~a~0.offset) (= c_ULTIMATE.start_main_~a~0.base v_ULTIMATE.start_main_~t~0.base_53)) (and (or (not (= v_ULTIMATE.start_main_~t~0.base_53 .cse0)) (not (= .cse1 (_ bv0 32)))) (= c_ULTIMATE.start_main_~p~0.offset .cse1) (= c_ULTIMATE.start_main_~p~0.base .cse0)) (and (= c_ULTIMATE.start_main_~a~0.base .cse0) (= .cse1 c_ULTIMATE.start_main_~a~0.offset)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~t~0.base_53)))))))))) is different from false [2021-10-16 02:14:03,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10208 treesize of output 10064 [2021-10-16 02:14:03,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48692 treesize of output 48116 [2021-10-16 02:14:05,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:14:05,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:14:05,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:14:05,468 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:14:05,468 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:14:05,478 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:14:05,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:14:05,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-16 02:14:05,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:14:06,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:14:06,091 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:14:06,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:14:06 BoogieIcfgContainer [2021-10-16 02:14:06,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:14:06,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:14:06,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:14:06,110 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:14:06,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:32" (3/4) ... [2021-10-16 02:14:06,114 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:14:06,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:14:06,115 INFO L168 Benchmark]: Toolchain (without parser) took 395189.18 ms. Allocated memory was 71.3 MB in the beginning and 257.9 MB in the end (delta: 186.6 MB). Free memory was 54.2 MB in the beginning and 186.1 MB in the end (delta: -131.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:14:06,116 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:14:06,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.65 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 47.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:14:06,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.16 ms. Allocated memory is still 71.3 MB. Free memory was 47.2 MB in the beginning and 44.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:14:06,117 INFO L168 Benchmark]: Boogie Preprocessor took 109.00 ms. Allocated memory is still 71.3 MB. Free memory was 44.7 MB in the beginning and 42.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:14:06,117 INFO L168 Benchmark]: RCFGBuilder took 1012.04 ms. Allocated memory is still 71.3 MB. Free memory was 42.3 MB in the beginning and 45.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:14:06,118 INFO L168 Benchmark]: TraceAbstraction took 393246.27 ms. Allocated memory was 71.3 MB in the beginning and 257.9 MB in the end (delta: 186.6 MB). Free memory was 45.2 MB in the beginning and 186.1 MB in the end (delta: -140.9 MB). Peak memory consumption was 174.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:14:06,118 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 257.9 MB. Free memory is still 186.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:14:06,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 688.65 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 47.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 119.16 ms. Allocated memory is still 71.3 MB. Free memory was 47.2 MB in the beginning and 44.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.00 ms. Allocated memory is still 71.3 MB. Free memory was 44.7 MB in the beginning and 42.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1012.04 ms. Allocated memory is still 71.3 MB. Free memory was 42.3 MB in the beginning and 45.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 393246.27 ms. Allocated memory was 71.3 MB in the beginning and 257.9 MB in the end (delta: 186.6 MB). Free memory was 45.2 MB in the beginning and 186.1 MB in the end (delta: -140.9 MB). Peak memory consumption was 174.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 257.9 MB. Free memory is still 186.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 620]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L552] struct TreeNode* root = malloc(sizeof(*root)), *n; [L553] root->left = ((void *)0) [L554] root->right = ((void *)0) [L555] COND FALSE !(__VERIFIER_nondet_int()) [L574] n = ((void *)0) [L575] struct TreeNode* pred; [L576] COND TRUE \read(*root) [L577] pred = ((void *)0) [L578] n = root [L579] EXPR n->left [L579] n->left || n->right [L579] EXPR n->right [L579] n->left || n->right [L579] COND FALSE !(n->left || n->right) [L586] COND FALSE !(\read(*pred)) [L592] root = ((void *)0) [L576] COND FALSE !(\read(*root)) [L595] List a = (List) malloc(sizeof(struct node)); [L596] COND FALSE !(a == 0) [L597] List t; [L598] List p = a; [L599] COND FALSE !(__VERIFIER_nondet_int()) [L606] COND TRUE __VERIFIER_nondet_int() [L607] p->h = 2 [L608] t = (List) malloc(sizeof(struct node)) [L609] COND FALSE !(t == 0) [L610] p->n = t [L611] EXPR p->n [L611] p = p->n [L606] COND TRUE __VERIFIER_nondet_int() [L607] p->h = 2 [L608] t = (List) malloc(sizeof(struct node)) [L609] COND FALSE !(t == 0) [L610] p->n = t [L611] EXPR p->n [L611] p = p->n [L606] COND FALSE !(__VERIFIER_nondet_int()) [L613] p->h = 3 [L614] p = a [L615] EXPR p->h [L615] COND FALSE !(p->h == 1) [L617] EXPR p->h [L617] COND TRUE p->h == 2 [L618] EXPR p->n [L618] p = p->n [L617] EXPR p->h [L617] COND FALSE !(p->h == 2) [L619] EXPR p->h [L619] COND TRUE p->h != 3 [L620] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 393133.6ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 46.8ms, AutomataDifference: 108464.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 537 SDtfs, 485 SDslu, 2681 SDs, 0 SdLazy, 1853 SolverSat, 228 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 63447.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1124 GetRequests, 884 SyntacticMatches, 41 SemanticMatches, 199 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 141219.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=11, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 144.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 147 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 369.5ms SsaConstructionTime, 1235.1ms SatisfiabilityAnalysisTime, 103670.3ms InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 974 ConstructedInterpolants, 91 QuantifiedInterpolants, 7241 SizeOfPredicates, 161 NumberOfNonLiveVariables, 1632 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 73/118 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:14:06,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816bd545-05e3-41eb-9266-151e61f3b535/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...