./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.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_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/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_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/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_0c680604-e080-43ed-ae2a-c7d5d266212c/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 51e1cb6b5be054e0cc2feb95a2cc523a7ce83209 ............................................................................................................................................................................................................................................................................................................................................................... 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_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/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_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/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_0c680604-e080-43ed-ae2a-c7d5d266212c/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 51e1cb6b5be054e0cc2feb95a2cc523a7ce83209 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:05:14,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:14,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:15,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:15,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:15,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:15,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:15,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:15,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:15,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:15,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:15,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:15,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:15,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:15,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:15,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:15,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:15,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:15,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:15,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:15,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:15,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:15,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:15,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:15,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:15,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:15,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:15,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:15,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:15,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:15,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:15,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:15,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:15,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:15,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:15,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:15,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:15,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:15,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:15,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:15,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:15,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:05:15,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:15,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:15,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:15,122 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:15,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:15,123 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:15,123 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:05:15,123 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:15,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:15,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:05:15,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:05:15,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:15,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:05:15,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:05:15,126 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:05:15,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:15,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:15,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:05:15,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:15,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:15,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:15,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:15,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:15,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:15,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:15,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:15,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:15,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:15,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:15,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:15,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:15,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:15,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:15,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:15,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:05:15,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:05:15,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:15,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:15,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:15,135 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_0c680604-e080-43ed-ae2a-c7d5d266212c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e1cb6b5be054e0cc2feb95a2cc523a7ce83209 [2021-10-16 03:05:15,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:15,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:15,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:15,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:15,528 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:15,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-10-16 03:05:15,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/1c1528e89/510afc2106814e3f88959c6fa95bf15a/FLAGf86b7c0cd [2021-10-16 03:05:16,390 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:16,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-10-16 03:05:16,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/1c1528e89/510afc2106814e3f88959c6fa95bf15a/FLAGf86b7c0cd [2021-10-16 03:05:16,423 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/1c1528e89/510afc2106814e3f88959c6fa95bf15a [2021-10-16 03:05:16,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:16,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:16,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:16,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:16,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:16,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:16,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bacd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16, skipping insertion in model container [2021-10-16 03:05:16,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:16,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:16,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:16,848 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_0c680604-e080-43ed-ae2a-c7d5d266212c/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-10-16 03:05:16,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:16,862 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:16,935 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_0c680604-e080-43ed-ae2a-c7d5d266212c/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-10-16 03:05:16,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:16,985 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:16,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16 WrapperNode [2021-10-16 03:05:16,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:16,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:16,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:16,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:16,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:17,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:17,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:17,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:17,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:17,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:17,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:17,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:17,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (1/1) ... [2021-10-16 03:05:17,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:17,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:17,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:17,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:05:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:05:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:05:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:05:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:05:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:05:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 03:05:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:05:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:18,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:18,051 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 03:05:18,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:18 BoogieIcfgContainer [2021-10-16 03:05:18,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:18,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:18,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:18,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:18,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:16" (1/3) ... [2021-10-16 03:05:18,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce8b23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:18, skipping insertion in model container [2021-10-16 03:05:18,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:16" (2/3) ... [2021-10-16 03:05:18,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce8b23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:18, skipping insertion in model container [2021-10-16 03:05:18,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:18" (3/3) ... [2021-10-16 03:05:18,066 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2021-10-16 03:05:18,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:18,073 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:18,141 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:18,149 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 03:05:18,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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 03:05:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:05:18,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:18,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:05:18,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:18,190 INFO L82 PathProgramCache]: Analyzing trace with hash 128004084, now seen corresponding path program 1 times [2021-10-16 03:05:18,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:18,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221041794] [2021-10-16 03:05:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:18,451 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 03:05:18,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:18,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221041794] [2021-10-16 03:05:18,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221041794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:18,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:18,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:05:18,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226453423] [2021-10-16 03:05:18,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:18,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:18,482 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:18,529 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-10-16 03:05:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:18,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:05:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:18,541 INFO L225 Difference]: With dead ends: 29 [2021-10-16 03:05:18,542 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 03:05:18,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 03:05:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-16 03:05:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-16 03:05:18,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 5 [2021-10-16 03:05:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:18,585 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-16 03:05:18,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-10-16 03:05:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:05:18,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:18,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:18,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:05:18,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:18,592 INFO L82 PathProgramCache]: Analyzing trace with hash -19785986, now seen corresponding path program 1 times [2021-10-16 03:05:18,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:18,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344698543] [2021-10-16 03:05:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:18,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:18,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344698543] [2021-10-16 03:05:18,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344698543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:05:18,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201582136] [2021-10-16 03:05:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:18,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:18,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:05:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:18,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:05:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:18,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:19,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201582136] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:19,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709999677] [2021-10-16 03:05:19,083 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-16 03:05:19,083 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:05:19,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:05:19,096 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:05:19,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:05:19,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,168 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:05:19,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:05:19,178 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:05:19,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:05:19,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-16 03:05:19,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:19,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:19,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:19,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:05:19,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:19,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:19,263 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:05:19,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:05:19,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:19,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-16 03:05:19,350 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:05:19,351 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:140, output treesize:143 [2021-10-16 03:05:19,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:19,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:19,553 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_37| 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 03:05:19,558 INFO L168 Benchmark]: Toolchain (without parser) took 3128.31 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 57.7 MB in the beginning and 86.2 MB in the end (delta: -28.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:19,559 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 65.6 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:19,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.13 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 61.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:19,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.64 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 58.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:19,561 INFO L168 Benchmark]: Boogie Preprocessor took 46.09 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 57.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:19,562 INFO L168 Benchmark]: RCFGBuilder took 959.01 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 56.8 MB in the beginning and 93.1 MB in the end (delta: -36.3 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:19,563 INFO L168 Benchmark]: TraceAbstraction took 1500.89 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 86.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:19,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 65.6 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.13 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 61.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.64 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 58.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.09 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 57.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 959.01 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 56.8 MB in the beginning and 93.1 MB in the end (delta: -36.3 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1500.89 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 86.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_37| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_37|: 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 03:05:19,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/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 03:05:22,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:22,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:22,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:22,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:22,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:22,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:22,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:22,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:22,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:22,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:22,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:22,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:22,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:22,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:22,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:22,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:22,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:22,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:22,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:22,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:22,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:22,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:22,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:22,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:22,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:22,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:22,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:22,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:22,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:22,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:22,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:22,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:22,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:22,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:22,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:22,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:22,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:22,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:22,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:22,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:22,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:05:22,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:22,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:22,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:22,781 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:22,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:22,781 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:22,781 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:22,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:22,782 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:22,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:22,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:22,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:22,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:22,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:22,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:22,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:22,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:22,785 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:05:22,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:05:22,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:22,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:22,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:22,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:22,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:22,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:05:22,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:22,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:22,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:22,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:22,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:22,789 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:05:22,789 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:22,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:22,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:22,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:22,790 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_0c680604-e080-43ed-ae2a-c7d5d266212c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e1cb6b5be054e0cc2feb95a2cc523a7ce83209 [2021-10-16 03:05:23,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:23,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:23,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:23,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:23,329 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:23,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-10-16 03:05:23,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/eebc08b55/0bf7d39a3fc84fa094c905b235a54df9/FLAG9233b91c1 [2021-10-16 03:05:24,170 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:24,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-10-16 03:05:24,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/eebc08b55/0bf7d39a3fc84fa094c905b235a54df9/FLAG9233b91c1 [2021-10-16 03:05:24,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/data/eebc08b55/0bf7d39a3fc84fa094c905b235a54df9 [2021-10-16 03:05:24,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:24,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:24,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:24,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:24,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:24,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:24" (1/1) ... [2021-10-16 03:05:24,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@935f516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:24, skipping insertion in model container [2021-10-16 03:05:24,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:24" (1/1) ... [2021-10-16 03:05:24,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:24,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:24,905 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_0c680604-e080-43ed-ae2a-c7d5d266212c/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-10-16 03:05:24,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:24,940 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:25,031 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_0c680604-e080-43ed-ae2a-c7d5d266212c/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-10-16 03:05:25,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:25,094 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:25,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25 WrapperNode [2021-10-16 03:05:25,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:25,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:25,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:25,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:25,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:25,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:25,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:25,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:25,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:25,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:25,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:25,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:25,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (1/1) ... [2021-10-16 03:05:25,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:25,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:25,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:05:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:05:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:05:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:05:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:05:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:05:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 03:05:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:05:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:26,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:26,211 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 03:05:26,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:26 BoogieIcfgContainer [2021-10-16 03:05:26,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:26,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:26,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:26,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:26,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:24" (1/3) ... [2021-10-16 03:05:26,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a3da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:26, skipping insertion in model container [2021-10-16 03:05:26,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:25" (2/3) ... [2021-10-16 03:05:26,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a3da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:26, skipping insertion in model container [2021-10-16 03:05:26,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:26" (3/3) ... [2021-10-16 03:05:26,231 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2021-10-16 03:05:26,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:26,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:26,324 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:26,336 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 03:05:26,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 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 03:05:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:05:26,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:26,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:26,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1343693430, now seen corresponding path program 1 times [2021-10-16 03:05:26,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:26,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305715748] [2021-10-16 03:05:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:26,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:26,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:26,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:26,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:05:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:26,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:26,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:26,770 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 03:05:26,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:26,851 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 03:05:26,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:26,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305715748] [2021-10-16 03:05:26,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305715748] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:26,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:26,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:05:26,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388053837] [2021-10-16 03:05:26,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:26,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:26,891 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 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) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 03:05:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:26,963 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2021-10-16 03:05:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 03:05:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:26,978 INFO L225 Difference]: With dead ends: 55 [2021-10-16 03:05:26,978 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 03:05:26,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 03:05:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 03:05:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-16 03:05:27,046 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 13 [2021-10-16 03:05:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:27,047 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-16 03:05:27,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 03:05:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-10-16 03:05:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 03:05:27,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:27,049 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:27,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:27,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:27,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:27,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1631453078, now seen corresponding path program 1 times [2021-10-16 03:05:27,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:27,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596097113] [2021-10-16 03:05:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:27,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:27,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:27,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:27,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:05:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:27,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:05:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 03:05:27,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 03:05:27,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:27,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596097113] [2021-10-16 03:05:27,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596097113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:27,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:27,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:27,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051169641] [2021-10-16 03:05:27,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:27,808 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 03:05:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:27,917 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-10-16 03:05:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:27,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 23 [2021-10-16 03:05:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:27,921 INFO L225 Difference]: With dead ends: 49 [2021-10-16 03:05:27,922 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 03:05:27,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 03:05:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-16 03:05:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-10-16 03:05:27,930 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 23 [2021-10-16 03:05:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:27,931 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-10-16 03:05:27,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 03:05:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-10-16 03:05:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 03:05:27,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:27,933 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:27,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 03:05:28,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:28,150 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:28,151 INFO L82 PathProgramCache]: Analyzing trace with hash -362691628, now seen corresponding path program 1 times [2021-10-16 03:05:28,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:28,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565842205] [2021-10-16 03:05:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:28,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:28,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:28,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:05:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:28,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-16 03:05:28,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:28,552 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 03:05:28,654 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 13 treesize of output 9 [2021-10-16 03:05:29,088 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-16 03:05:29,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2021-10-16 03:05:29,430 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 03:05:29,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:29,771 INFO L354 Elim1Store]: treesize reduction 196, result has 26.0 percent of original size [2021-10-16 03:05:29,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 94 [2021-10-16 03:05:30,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:30,330 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 27 treesize of output 11 [2021-10-16 03:05:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:30,414 INFO L354 Elim1Store]: treesize reduction 42, result has 34.4 percent of original size [2021-10-16 03:05:30,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 50 [2021-10-16 03:05:30,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:30,852 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-10-16 03:05:30,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 59 [2021-10-16 03:05:30,865 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 53 treesize of output 45 [2021-10-16 03:05:30,910 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 03:05:30,911 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 45 treesize of output 29 [2021-10-16 03:05:31,184 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 40 treesize of output 36 [2021-10-16 03:05:31,231 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-16 03:05:31,232 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 25 [2021-10-16 03:05:31,258 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 03:05:31,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-10-16 03:05:31,400 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 32 treesize of output 24 [2021-10-16 03:05:31,408 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 22 treesize of output 14 [2021-10-16 03:05:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:05:31,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:31,627 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 76 treesize of output 72 [2021-10-16 03:05:31,635 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 106 treesize of output 98 [2021-10-16 03:05:31,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:31,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-10-16 03:05:32,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:32,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-16 03:05:32,801 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 136 treesize of output 120 [2021-10-16 03:05:40,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:40,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-10-16 03:05:43,098 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_arrayElimCell_20 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (let ((.cse5 (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_dll_prepend_~head.offset)) (.cse4 (= c_ULTIMATE.start_dll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|))) (or (and (forall ((v_arrayElimCell_18 (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (= (select (select (let ((.cse0 (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res.offset|))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base|) .cse3 v_DerPreprocessor_3))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base|) .cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv8 32) v_arrayElimCell_20) v_DerPreprocessor_2)))))) (store .cse0 c_ULTIMATE.start_dll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset v_DerPreprocessor_1))) v_arrayElimCell_18) v_arrayElimCell_19) c_ULTIMATE.start_main_~uneq~0)) (or (not .cse4) (not .cse5))) (and .cse5 (= (select (select (let ((.cse6 (let ((.cse9 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res.offset|))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base|) .cse9 v_DerPreprocessor_3))) (.cse8 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base|) .cse9 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) (store .cse7 .cse8 (store (select .cse7 .cse8) (bvadd (_ bv8 32) v_arrayElimCell_20) v_DerPreprocessor_2)))))) (store .cse6 c_ULTIMATE.start_dll_prepend_~head.base (store (select .cse6 c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset v_DerPreprocessor_1))) |c_ULTIMATE.start_node_create_#res.base|) |c_ULTIMATE.start_node_create_#res.offset|) c_ULTIMATE.start_main_~uneq~0) .cse4)))) is different from false [2021-10-16 03:05:43,148 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 4004 treesize of output 3972 [2021-10-16 03:05:43,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:43,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5310 [2021-10-16 03:05:43,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:43,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565842205] [2021-10-16 03:05:43,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:05:43,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2062556642] [2021-10-16 03:05:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:43,486 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:43,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:43,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:43,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 03:05:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:43,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-16 03:05:43,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:44,099 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 03:05:44,662 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:05:44,663 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 03:05:45,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,039 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-10-16 03:05:45,040 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 1 case distinctions, treesize of input 34 treesize of output 34 [2021-10-16 03:05:45,106 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 03:05:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,549 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 27 treesize of output 11 [2021-10-16 03:05:45,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,578 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:45,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 03:05:45,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:45,887 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:45,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 45 [2021-10-16 03:05:45,896 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 39 treesize of output 31 [2021-10-16 03:05:45,923 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 03:05:45,924 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 31 treesize of output 15 [2021-10-16 03:05:46,169 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 40 treesize of output 36 [2021-10-16 03:05:46,211 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-10-16 03:05:46,211 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 37 treesize of output 25 [2021-10-16 03:05:46,237 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 03:05:46,430 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 32 [2021-10-16 03:05:46,449 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-16 03:05:46,450 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 32 treesize of output 23 [2021-10-16 03:05:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:05:46,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:46,499 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 76 treesize of output 72 [2021-10-16 03:05:46,504 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 106 treesize of output 98 [2021-10-16 03:05:46,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:46,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-10-16 03:05:47,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:47,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-16 03:05:47,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 120 [2021-10-16 03:05:52,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:52,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-10-16 03:05:55,170 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_arrayElimCell_20 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (let ((.cse5 (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_dll_prepend_~head.offset)) (.cse4 (= c_ULTIMATE.start_dll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|))) (or (and (forall ((v_arrayElimCell_18 (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (= (select (select (let ((.cse0 (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res.offset|))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base|) .cse3 v_DerPreprocessor_7))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base|) .cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv8 32) v_arrayElimCell_20) v_DerPreprocessor_2)))))) (store .cse0 c_ULTIMATE.start_dll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset v_DerPreprocessor_1))) v_arrayElimCell_18) v_arrayElimCell_19) c_ULTIMATE.start_main_~uneq~0)) (or (not .cse4) (not .cse5))) (and .cse5 .cse4 (= (select (select (let ((.cse6 (let ((.cse9 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res.offset|))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_#res.base|) .cse9 v_DerPreprocessor_7))) (.cse8 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base|) .cse9 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) (store .cse7 .cse8 (store (select .cse7 .cse8) (bvadd (_ bv8 32) v_arrayElimCell_20) v_DerPreprocessor_2)))))) (store .cse6 c_ULTIMATE.start_dll_prepend_~head.base (store (select .cse6 c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset v_DerPreprocessor_1))) |c_ULTIMATE.start_node_create_#res.base|) |c_ULTIMATE.start_node_create_#res.offset|) c_ULTIMATE.start_main_~uneq~0))))) is different from false [2021-10-16 03:05:55,208 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 2504 treesize of output 2488 [2021-10-16 03:05:55,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:55,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3516 [2021-10-16 03:05:55,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:05:55,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024106741] [2021-10-16 03:05:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:55,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:55,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:55,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:55,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 03:05:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:55,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 03:05:55,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:55,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:05:56,005 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:05:56,006 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 03:05:56,290 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 03:05:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:56,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:56,448 INFO L354 Elim1Store]: treesize reduction 80, result has 29.2 percent of original size [2021-10-16 03:05:56,449 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 1 case distinctions, treesize of input 34 treesize of output 56 [2021-10-16 03:05:56,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:56,867 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 27 treesize of output 11 [2021-10-16 03:05:56,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:56,961 INFO L354 Elim1Store]: treesize reduction 42, result has 34.4 percent of original size [2021-10-16 03:05:56,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 50 [2021-10-16 03:05:57,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:57,410 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-10-16 03:05:57,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 59 [2021-10-16 03:05:57,416 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 53 treesize of output 45 [2021-10-16 03:05:57,443 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 03:05:57,443 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 45 treesize of output 29 [2021-10-16 03:05:57,767 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 03:05:57,781 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 40 treesize of output 36 [2021-10-16 03:05:57,823 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-16 03:05:57,824 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 37 treesize of output 25 [2021-10-16 03:05:57,974 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 32 [2021-10-16 03:05:57,978 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 32 treesize of output 24 [2021-10-16 03:05:57,989 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 22 treesize of output 14 [2021-10-16 03:05:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:05:57,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:58,027 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 76 treesize of output 72 [2021-10-16 03:05:58,040 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 106 treesize of output 98 [2021-10-16 03:05:58,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:58,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-10-16 03:05:59,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:59,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-16 03:05:59,268 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 136 treesize of output 120 [2021-10-16 03:06:01,471 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_arrayElimCell_60 (_ BitVec 32))) (let ((.cse3 (= c_ULTIMATE.start_dll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|)) (.cse2 (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_dll_prepend_~head.offset))) (or (and (= c_ULTIMATE.start_main_~uneq~0 (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) (store |c_#memory_int| .cse1 (store (select |c_#memory_int| .cse1) (bvadd (_ bv8 32) v_arrayElimCell_60) v_DerPreprocessor_10))))) (store .cse0 c_ULTIMATE.start_dll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset v_DerPreprocessor_1))) c_ULTIMATE.start_dll_prepend_~new_head~1.base) c_ULTIMATE.start_dll_prepend_~new_head~1.offset)) .cse2 .cse3) (and (or (not .cse3) (not .cse2)) (forall ((v_arrayElimCell_18 (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (= (select (select (let ((.cse4 (let ((.cse5 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset))) (store |c_#memory_int| .cse5 (store (select |c_#memory_int| .cse5) (bvadd (_ bv8 32) v_arrayElimCell_60) v_DerPreprocessor_10))))) (store .cse4 c_ULTIMATE.start_dll_prepend_~head.base (store (select .cse4 c_ULTIMATE.start_dll_prepend_~head.base) c_ULTIMATE.start_dll_prepend_~head.offset v_DerPreprocessor_1))) v_arrayElimCell_18) v_arrayElimCell_19) c_ULTIMATE.start_main_~uneq~0)))))) is different from false [2021-10-16 03:06:01,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:06:01,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-10-16 03:06:19,459 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 2300 treesize of output 2284 [2021-10-16 03:06:19,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:06:19,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3188 [2021-10-16 03:06:19,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:06:19,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:19,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 03:06:19,541 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 03:06:19,541 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 03:06:19,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:06:19,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:19,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:19,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-16 03:06:20,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:20,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:06:20,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:06:20 BoogieIcfgContainer [2021-10-16 03:06:20,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:06:20,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:06:20,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:06:20,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:06:20,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:26" (3/4) ... [2021-10-16 03:06:20,221 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:06:20,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:06:20,222 INFO L168 Benchmark]: Toolchain (without parser) took 55830.72 ms. Allocated memory was 67.1 MB in the beginning and 130.0 MB in the end (delta: 62.9 MB). Free memory was 46.5 MB in the beginning and 54.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,224 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:06:20,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.81 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 42.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.56 ms. Allocated memory is still 67.1 MB. Free memory was 42.3 MB in the beginning and 40.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,225 INFO L168 Benchmark]: Boogie Preprocessor took 80.60 ms. Allocated memory is still 67.1 MB. Free memory was 40.1 MB in the beginning and 38.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,230 INFO L168 Benchmark]: RCFGBuilder took 940.72 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 38.1 MB in the beginning and 79.7 MB in the end (delta: -41.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,231 INFO L168 Benchmark]: TraceAbstraction took 53993.28 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 79.2 MB in the beginning and 55.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 67.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,231 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 130.0 MB. Free memory was 55.2 MB in the beginning and 54.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:20,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 703.81 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 42.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.56 ms. Allocated memory is still 67.1 MB. Free memory was 42.3 MB in the beginning and 40.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.60 ms. Allocated memory is still 67.1 MB. Free memory was 40.1 MB in the beginning and 38.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 940.72 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 38.1 MB in the beginning and 79.7 MB in the end (delta: -41.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 53993.28 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 79.2 MB in the beginning and 55.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 67.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.91 ms. Allocated memory is still 130.0 MB. Free memory was 55.2 MB in the beginning and 54.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 643]: 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: [L619] const int len = 2; [L620] const int data = 1; [L621] DLL s = dll_create(len, data); [L586] DLL head = ((void *)0); [L587] COND TRUE len > 0 [L588] DLL new_head = (DLL) malloc(sizeof(struct node)); [L589] COND FALSE !(((void *)0) == new_head) [L592] new_head->data = data [L593] new_head->next = head [L594] new_head->prev = ((void *)0) [L595] COND FALSE !(\read(head)) [L598] head = new_head [L599] len-- [L587] COND TRUE len > 0 [L588] DLL new_head = (DLL) malloc(sizeof(struct node)); [L589] COND FALSE !(((void *)0) == new_head) [L592] new_head->data = data [L593] new_head->next = head [L594] new_head->prev = ((void *)0) [L595] COND TRUE \read(head) [L596] head->prev = new_head [L598] head = new_head [L599] len-- [L587] COND FALSE !(len > 0) [L601] return head; [L621] DLL s = dll_create(len, data); [L622] const int uneq = 5; [L576] DLL temp = (DLL) malloc(sizeof(struct node)); [L577] COND FALSE !(((void *)0) == temp) [L580] temp->next = ((void *)0) [L581] temp->prev = ((void *)0) [L582] temp->data = data [L583] return temp; [L611] DLL new_head = node_create(data); [L612] EXPR \read(*head) [L612] new_head->next = *head [L613] EXPR \read(*head) [L613] COND TRUE *head [L614] EXPR \read(*head) [L614] (*head)->prev = new_head [L616] *head = new_head [L624] EXPR \read(s) [L624] DLL ptr = s; [L625] EXPR ptr->data [L625] COND TRUE uneq != ptr->data [L643] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53862.2ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 30.1ms, AutomataDifference: 234.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 15 SDslu, 78 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 50.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.2ms SsaConstructionTime, 144.7ms SatisfiabilityAnalysisTime, 608.8ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 3 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 14/14 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 03:06:20,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c680604-e080-43ed-ae2a-c7d5d266212c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...