./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE --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 b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE --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 b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:52:14,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:52:14,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:52:15,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:52:15,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:52:15,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:52:15,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:52:15,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:52:15,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:52:15,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:52:15,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:52:15,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:52:15,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:52:15,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:52:15,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:52:15,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:52:15,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:52:15,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:52:15,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:52:15,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:52:15,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:52:15,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:52:15,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:52:15,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:52:15,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:52:15,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:52:15,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:52:15,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:52:15,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:52:15,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:52:15,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:52:15,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:52:15,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:52:15,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:52:15,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:52:15,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:52:15,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:52:15,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:52:15,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:52:15,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:52:15,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:52:15,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:52:15,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:52:15,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:52:15,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:52:15,180 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:52:15,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:52:15,181 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:52:15,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:52:15,182 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:52:15,189 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:52:15,190 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:52:15,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:52:15,191 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:52:15,192 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:52:15,192 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:52:15,192 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:52:15,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:52:15,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:52:15,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:52:15,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:52:15,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:52:15,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:52:15,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:52:15,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:52:15,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:52:15,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:52:15,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:52:15,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:52:15,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:52:15,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:52:15,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:52:15,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:52:15,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:52:15,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:52:15,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:52:15,201 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:52:15,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:52:15,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:52:15,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:52:15,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:52:15,202 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_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 [2021-10-24 09:52:15,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:52:15,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:52:15,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:52:15,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:52:15,624 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:52:15,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-10-24 09:52:15,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/2f6e10411/61ccceb15f134a46b3bccec38d506c73/FLAG2deaddc42 [2021-10-24 09:52:16,277 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:52:16,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-10-24 09:52:16,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/2f6e10411/61ccceb15f134a46b3bccec38d506c73/FLAG2deaddc42 [2021-10-24 09:52:16,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/2f6e10411/61ccceb15f134a46b3bccec38d506c73 [2021-10-24 09:52:16,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:52:16,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:52:16,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:52:16,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:52:16,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:52:16,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:16" (1/1) ... [2021-10-24 09:52:16,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522ee683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:16, skipping insertion in model container [2021-10-24 09:52:16,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:16" (1/1) ... [2021-10-24 09:52:16,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:52:16,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:52:17,001 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_059aebaf-ba62-40bd-96b1-995f8aa17244/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-10-24 09:52:17,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:52:17,024 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:52:17,091 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_059aebaf-ba62-40bd-96b1-995f8aa17244/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-10-24 09:52:17,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:52:17,128 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:52:17,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17 WrapperNode [2021-10-24 09:52:17,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:52:17,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:52:17,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:52:17,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:52:17,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:52:17,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:52:17,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:52:17,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:52:17,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:52:17,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:52:17,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:52:17,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:52:17,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (1/1) ... [2021-10-24 09:52:17,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:52:17,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:52:17,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:52:17,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:52:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:52:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:52:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 09:52:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 09:52:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:52:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 09:52:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:52:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 09:52:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:52:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:52:17,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:52:18,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:52:18,401 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-24 09:52:18,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:18 BoogieIcfgContainer [2021-10-24 09:52:18,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:52:18,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:52:18,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:52:18,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:52:18,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:52:16" (1/3) ... [2021-10-24 09:52:18,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fac5bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:18, skipping insertion in model container [2021-10-24 09:52:18,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:17" (2/3) ... [2021-10-24 09:52:18,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fac5bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:18, skipping insertion in model container [2021-10-24 09:52:18,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:18" (3/3) ... [2021-10-24 09:52:18,414 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2021-10-24 09:52:18,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:52:18,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:52:18,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:52:18,480 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, mAutomataTypeConcurrency=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 [2021-10-24 09:52:18,481 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:52:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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) [2021-10-24 09:52:18,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:52:18,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:18,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:18,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1383064911, now seen corresponding path program 1 times [2021-10-24 09:52:18,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:52:18,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205801543] [2021-10-24 09:52:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:18,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:52:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:18,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:52:18,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205801543] [2021-10-24 09:52:18,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205801543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:52:18,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:52:18,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:52:18,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602937974] [2021-10-24 09:52:18,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:52:18,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:52:18,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:52:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:52:18,839 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:18,882 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2021-10-24 09:52:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:52:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 09:52:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:18,896 INFO L225 Difference]: With dead ends: 47 [2021-10-24 09:52:18,896 INFO L226 Difference]: Without dead ends: 19 [2021-10-24 09:52:18,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:52:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-24 09:52:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-24 09:52:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-10-24 09:52:18,938 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2021-10-24 09:52:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:18,939 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-10-24 09:52:18,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-10-24 09:52:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:52:18,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:18,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:18,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:52:18,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:18,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1114896251, now seen corresponding path program 1 times [2021-10-24 09:52:18,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:52:18,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321306461] [2021-10-24 09:52:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:18,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:52:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:19,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:52:19,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321306461] [2021-10-24 09:52:19,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321306461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:52:19,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26679463] [2021-10-24 09:52:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:19,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:52:19,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:52:19,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:52:19,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:52:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:52:19,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:52:19,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:52:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:52:19,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26679463] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:52:19,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:52:19,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2021-10-24 09:52:19,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235846618] [2021-10-24 09:52:19,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:52:19,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:52:19,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:52:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:52:19,680 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:19,729 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-10-24 09:52:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:52:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 09:52:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:19,735 INFO L225 Difference]: With dead ends: 30 [2021-10-24 09:52:19,736 INFO L226 Difference]: Without dead ends: 19 [2021-10-24 09:52:19,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:52:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-24 09:52:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-24 09:52:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-10-24 09:52:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-10-24 09:52:19,747 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2021-10-24 09:52:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:19,755 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-24 09:52:19,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-10-24 09:52:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:52:19,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:19,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:19,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:19,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:52:19,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:19,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:19,973 INFO L82 PathProgramCache]: Analyzing trace with hash 98636129, now seen corresponding path program 1 times [2021-10-24 09:52:19,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:52:19,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424301854] [2021-10-24 09:52:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:19,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:52:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:20,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:52:20,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424301854] [2021-10-24 09:52:20,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424301854] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:52:20,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735221438] [2021-10-24 09:52:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:20,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:52:20,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:52:20,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:52:20,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:52:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:20,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-24 09:52:20,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:21,102 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-24 09:52:21,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 97 [2021-10-24 09:52:22,283 INFO L354 Elim1Store]: treesize reduction 144, result has 20.4 percent of original size [2021-10-24 09:52:22,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 58 treesize of output 86 [2021-10-24 09:52:23,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-10-24 09:52:23,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-10-24 09:52:23,543 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-24 09:52:23,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 140 [2021-10-24 09:52:23,581 INFO L354 Elim1Store]: treesize reduction 65, result has 14.5 percent of original size [2021-10-24 09:52:23,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 170 [2021-10-24 09:52:23,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:23,683 INFO L354 Elim1Store]: treesize reduction 144, result has 34.8 percent of original size [2021-10-24 09:52:23,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 167 treesize of output 217 [2021-10-24 09:52:24,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:24,114 INFO L354 Elim1Store]: treesize reduction 190, result has 10.4 percent of original size [2021-10-24 09:52:24,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 122 [2021-10-24 09:52:24,145 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-24 09:52:24,145 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 162 treesize of output 150 [2021-10-24 09:52:24,168 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-24 09:52:24,168 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 147 treesize of output 146 [2021-10-24 09:52:24,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:24,188 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-24 09:52:24,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 122 [2021-10-24 09:52:24,975 INFO L354 Elim1Store]: treesize reduction 372, result has 17.0 percent of original size [2021-10-24 09:52:24,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 403 treesize of output 346 [2021-10-24 09:52:25,130 INFO L354 Elim1Store]: treesize reduction 296, result has 17.8 percent of original size [2021-10-24 09:52:25,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 534 treesize of output 527 [2021-10-24 09:52:25,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-24 09:52:25,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550168964] [2021-10-24 09:52:25,220 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 09:52:25,221 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:52:25,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:52:25,232 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:52:25,232 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:52:25,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:25,272 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:52:25,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:25,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-24 09:52:25,274 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:52:25,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:25,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 09:52:25,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 09:52:25,289 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3282cb53 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-10-24 09:52:25,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:52:25,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-24 09:52:25,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421617246] [2021-10-24 09:52:25,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 09:52:25,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:52:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 09:52:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-10-24 09:52:25,299 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 11 states, 11 states have (on average 1.0) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:52:25,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:25,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:52:25,528 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3282cb53 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:864) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-10-24 09:52:25,531 INFO L168 Benchmark]: Toolchain (without parser) took 8945.56 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 78.8 MB in the beginning and 110.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:25,531 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 54.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:52:25,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.11 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 80.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:25,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.89 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 77.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:25,533 INFO L168 Benchmark]: Boogie Preprocessor took 39.72 ms. Allocated memory is still 113.2 MB. Free memory was 77.6 MB in the beginning and 75.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:25,534 INFO L168 Benchmark]: RCFGBuilder took 1173.81 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 102.7 MB in the end (delta: -27.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:25,535 INFO L168 Benchmark]: TraceAbstraction took 7124.19 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 102.0 MB in the beginning and 110.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:25,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 54.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 541.11 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 80.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.89 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 77.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.72 ms. Allocated memory is still 113.2 MB. Free memory was 77.6 MB in the beginning and 75.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1173.81 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 102.7 MB in the end (delta: -27.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7124.19 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 102.0 MB in the beginning and 110.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3282cb53 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3282cb53: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-24 09:52:25,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/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-e943c26 [2021-10-24 09:52:28,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:52:28,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:52:28,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:52:28,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:52:28,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:52:28,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:52:28,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:52:28,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:52:28,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:52:28,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:52:28,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:52:28,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:52:28,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:52:28,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:52:28,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:52:28,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:52:28,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:52:28,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:52:28,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:52:28,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:52:28,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:52:28,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:52:28,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:52:28,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:52:28,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:52:28,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:52:28,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:52:28,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:52:28,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:52:28,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:52:28,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:52:28,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:52:28,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:52:28,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:52:28,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:52:28,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:52:28,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:52:28,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:52:28,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:52:28,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:52:28,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:52:28,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:52:28,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:52:28,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:52:28,191 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:52:28,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:52:28,192 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:52:28,192 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:52:28,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:52:28,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:52:28,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:52:28,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:52:28,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:52:28,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:52:28,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:52:28,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:52:28,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:52:28,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:52:28,197 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:52:28,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:52:28,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:52:28,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:52:28,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:52:28,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:52:28,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:52:28,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:52:28,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:52:28,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:52:28,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:52:28,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:52:28,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:52:28,200 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:52:28,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:52:28,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:52:28,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:52:28,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:52:28,201 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_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 [2021-10-24 09:52:28,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:52:28,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:52:28,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:52:28,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:52:28,631 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:52:28,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-10-24 09:52:28,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/c2c6db096/2309c317c19b4981bd0b09d4b7db101d/FLAG4b776ffcd [2021-10-24 09:52:29,417 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:52:29,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-10-24 09:52:29,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/c2c6db096/2309c317c19b4981bd0b09d4b7db101d/FLAG4b776ffcd [2021-10-24 09:52:29,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/data/c2c6db096/2309c317c19b4981bd0b09d4b7db101d [2021-10-24 09:52:29,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:52:29,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:52:29,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:52:29,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:52:29,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:52:29,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:29" (1/1) ... [2021-10-24 09:52:29,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5494c882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:29, skipping insertion in model container [2021-10-24 09:52:29,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:29" (1/1) ... [2021-10-24 09:52:29,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:52:29,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:52:30,157 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_059aebaf-ba62-40bd-96b1-995f8aa17244/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-10-24 09:52:30,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:52:30,187 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:52:30,262 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_059aebaf-ba62-40bd-96b1-995f8aa17244/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-10-24 09:52:30,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:52:30,298 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:52:30,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30 WrapperNode [2021-10-24 09:52:30,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:52:30,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:52:30,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:52:30,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:52:30,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:52:30,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:52:30,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:52:30,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:52:30,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:52:30,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:52:30,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:52:30,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:52:30,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (1/1) ... [2021-10-24 09:52:30,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:52:30,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:52:30,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:52:30,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:52:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:52:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 09:52:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 09:52:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:52:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 09:52:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:52:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:52:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 09:52:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:52:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:52:30,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:52:31,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:52:31,241 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-24 09:52:31,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:31 BoogieIcfgContainer [2021-10-24 09:52:31,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:52:31,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:52:31,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:52:31,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:52:31,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:52:29" (1/3) ... [2021-10-24 09:52:31,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf7ae65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:31, skipping insertion in model container [2021-10-24 09:52:31,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:30" (2/3) ... [2021-10-24 09:52:31,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf7ae65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:31, skipping insertion in model container [2021-10-24 09:52:31,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:31" (3/3) ... [2021-10-24 09:52:31,258 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2021-10-24 09:52:31,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:52:31,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:52:31,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:52:31,344 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, mAutomataTypeConcurrency=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 [2021-10-24 09:52:31,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:52:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.525) internal successors, (61), 41 states have internal predecessors, (61), 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) [2021-10-24 09:52:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 09:52:31,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:31,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:31,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1060200381, now seen corresponding path program 1 times [2021-10-24 09:52:31,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:52:31,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101289403] [2021-10-24 09:52:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:31,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:52:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:52:31,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:52:31,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:52:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:31,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:52:31,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:31,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:52:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:31,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:52:31,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101289403] [2021-10-24 09:52:31,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101289403] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:52:31,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:52:31,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:52:31,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679774535] [2021-10-24 09:52:31,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:52:31,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:52:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:52:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:52:31,728 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.525) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:31,747 INFO L93 Difference]: Finished difference Result 73 states and 107 transitions. [2021-10-24 09:52:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:52:31,748 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-24 09:52:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:31,757 INFO L225 Difference]: With dead ends: 73 [2021-10-24 09:52:31,758 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 09:52:31,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:52:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 09:52:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-24 09:52:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-10-24 09:52:31,794 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2021-10-24 09:52:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:31,795 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-10-24 09:52:31,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-10-24 09:52:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 09:52:31,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:31,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:31,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:32,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:32,010 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash -746957685, now seen corresponding path program 1 times [2021-10-24 09:52:32,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:52:32,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550471509] [2021-10-24 09:52:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:32,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:52:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:52:32,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:52:32,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:52:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:32,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:52:32,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:32,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:52:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:32,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:52:32,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550471509] [2021-10-24 09:52:32,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550471509] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:52:32,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:52:32,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:52:32,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422109610] [2021-10-24 09:52:32,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:52:32,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:52:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:52:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:52:32,377 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-10-24 09:52:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:32,429 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2021-10-24 09:52:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:52:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 17 [2021-10-24 09:52:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:32,433 INFO L225 Difference]: With dead ends: 59 [2021-10-24 09:52:32,434 INFO L226 Difference]: Without dead ends: 36 [2021-10-24 09:52:32,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:52:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-24 09:52:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-10-24 09:52:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2021-10-24 09:52:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-10-24 09:52:32,448 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 17 [2021-10-24 09:52:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:32,448 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-10-24 09:52:32,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-10-24 09:52:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-10-24 09:52:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 09:52:32,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:32,450 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:32,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:32,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:32,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:32,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:32,665 INFO L82 PathProgramCache]: Analyzing trace with hash 670691795, now seen corresponding path program 1 times [2021-10-24 09:52:32,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:52:32,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062479587] [2021-10-24 09:52:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:32,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:52:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:52:32,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:52:32,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:52:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:32,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:52:32,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:52:32,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:52:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:52:33,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:52:33,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062479587] [2021-10-24 09:52:33,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062479587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:52:33,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:52:33,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:52:33,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836346710] [2021-10-24 09:52:33,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:52:33,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:52:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:52:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:52:33,520 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-10-24 09:52:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:33,585 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-10-24 09:52:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:52:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 21 [2021-10-24 09:52:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:33,587 INFO L225 Difference]: With dead ends: 51 [2021-10-24 09:52:33,587 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 09:52:33,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 186.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:52:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 09:52:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-24 09:52:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-10-24 09:52:33,594 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 21 [2021-10-24 09:52:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:33,595 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-10-24 09:52:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-10-24 09:52:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-10-24 09:52:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 09:52:33,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:33,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:33,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:33,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:33,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash 852300701, now seen corresponding path program 1 times [2021-10-24 09:52:33,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:52:33,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395118805] [2021-10-24 09:52:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:33,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:52:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:52:33,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:52:33,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:52:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:34,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-24 09:52:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:34,191 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 09:52:34,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-24 09:52:34,569 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-24 09:52:34,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-10-24 09:52:34,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:52:35,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-24 09:52:35,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-24 09:52:35,584 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-24 09:52:35,584 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 65 [2021-10-24 09:52:35,622 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-24 09:52:35,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 55 [2021-10-24 09:52:35,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:35,939 INFO L354 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2021-10-24 09:52:35,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 72 [2021-10-24 09:52:36,884 INFO L354 Elim1Store]: treesize reduction 239, result has 16.1 percent of original size [2021-10-24 09:52:36,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 146 treesize of output 131 [2021-10-24 09:52:37,044 INFO L354 Elim1Store]: treesize reduction 82, result has 23.4 percent of original size [2021-10-24 09:52:37,045 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 2 case distinctions, treesize of input 135 treesize of output 133 [2021-10-24 09:52:37,088 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-24 09:52:37,089 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 130 treesize of output 118 [2021-10-24 09:52:37,127 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-24 09:52:37,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 114 [2021-10-24 09:52:43,997 INFO L354 Elim1Store]: treesize reduction 343, result has 9.7 percent of original size [2021-10-24 09:52:43,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 260 treesize of output 198 [2021-10-24 09:52:44,258 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-24 09:52:44,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 265 [2021-10-24 09:52:44,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:44,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-10-24 09:52:44,363 INFO L354 Elim1Store]: treesize reduction 322, result has 7.7 percent of original size [2021-10-24 09:52:44,363 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 2 case distinctions, treesize of input 340 treesize of output 243 [2021-10-24 09:52:45,666 INFO L354 Elim1Store]: treesize reduction 105, result has 3.7 percent of original size [2021-10-24 09:52:45,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 256 treesize of output 126 [2021-10-24 09:52:45,681 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-24 09:52:45,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 72 [2021-10-24 09:52:45,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-24 09:52:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:46,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:52:46,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:46,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-24 09:52:46,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:46,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-24 09:52:48,403 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~last~1.offset (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~last~1.base (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base (store (select |c_#memory_int| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base) c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.offset v_DerPreprocessor_3)))) (store .cse0 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse0 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_2))) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base) c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.offset c_ULTIMATE.start_sll_circular_insert_~new_node~0.base)))) (store .cse1 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse1 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset ULTIMATE.start_sll_circular_insert_~last~1.base))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base) c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.offset ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse2 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse2 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset ULTIMATE.start_sll_circular_insert_~last~1.offset))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:52:50,585 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.base_14 (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.offset_14 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_sll_circular_insert_~last~1.base (store (select |c_#memory_int| c_ULTIMATE.start_sll_circular_insert_~last~1.base) c_ULTIMATE.start_sll_circular_insert_~last~1.offset v_DerPreprocessor_3)))) (store .cse0 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse0 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_2))) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~last~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~last~1.base) c_ULTIMATE.start_sll_circular_insert_~last~1.offset c_ULTIMATE.start_sll_circular_insert_~new_node~0.base)))) (store .cse1 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse1 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.base_14))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~last~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~last~1.base) c_ULTIMATE.start_sll_circular_insert_~last~1.offset ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse2 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse2 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.offset_14))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:52:52,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.base_14 (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.offset_14 (_ BitVec 32))) (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset)) (.cse2 (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset))) (select (select (let ((.cse0 (store |c_#memory_int| .cse1 (store (select |c_#memory_int| .cse1) .cse2 v_DerPreprocessor_3)))) (store .cse0 |c_ULTIMATE.start_node_create_#res.base| (store (select .cse0 |c_ULTIMATE.start_node_create_#res.base|) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_2))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) .cse2 |c_ULTIMATE.start_node_create_#res.base|)))) (store .cse3 |c_ULTIMATE.start_node_create_#res.base| (store (select .cse3 |c_ULTIMATE.start_node_create_#res.base|) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.base_14))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) .cse2 ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse4 |c_ULTIMATE.start_node_create_#res.base| (store (select .cse4 |c_ULTIMATE.start_node_create_#res.base|) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.offset_14))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:52:52,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:52,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 09:52:52,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:52,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-10-24 09:52:52,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:52:52,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 551 [2021-10-24 09:52:54,838 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.base_14 (_ BitVec 32)) (ULTIMATE.start_node_create_~temp~0.offset (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.offset_14 (_ BitVec 32))) (= (let ((.cse4 (bvadd (_ bv4 32) ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_node_create_~temp~0.offset (_ bv0 32)) .cse4 v_DerPreprocessor_6))) (.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_node_create_~temp~0.offset (_ bv0 32)) .cse4 v_DerPreprocessor_5)))) (let ((.cse2 (select (select .cse6 c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset)) (.cse3 (select (select .cse8 c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset))) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_4) .cse4 ULTIMATE.start_node_create_~data)))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 v_DerPreprocessor_3))))) (store .cse0 c_ULTIMATE.start_node_create_~temp~0.base (store (select .cse0 c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_2))) (select (select (let ((.cse5 (store .cse6 .cse2 (store (select .cse6 .cse2) .cse3 c_ULTIMATE.start_node_create_~temp~0.base)))) (store .cse5 c_ULTIMATE.start_node_create_~temp~0.base (store (select .cse5 c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.base_14))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (select (select (let ((.cse7 (store .cse8 .cse2 (store (select .cse8 .cse2) .cse3 ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse7 c_ULTIMATE.start_node_create_~temp~0.base (store (select .cse7 c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.offset_14))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) (_ bv4 32)))))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:52:55,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 346344 treesize of output 341436 [2021-10-24 09:52:55,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:52:55,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395118805] [2021-10-24 09:52:55,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 09:52:55,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949197598] [2021-10-24 09:52:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:55,667 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:52:55,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:52:55,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:52:55,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-24 09:52:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:56,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-24 09:52:56,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:56,189 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 09:52:56,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-24 09:52:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:56,573 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-10-24 09:52:56,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44 [2021-10-24 09:52:57,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:52:57,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-24 09:52:57,648 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-24 09:52:57,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-10-24 09:52:57,985 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-24 09:52:57,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 33 [2021-10-24 09:52:58,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:58,526 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 09:52:58,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-10-24 09:52:58,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:52:58,600 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 09:52:58,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 61 [2021-10-24 09:52:58,608 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 66 treesize of output 54 [2021-10-24 09:52:58,640 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-24 09:52:58,641 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 51 treesize of output 50 [2021-10-24 09:53:00,394 INFO L354 Elim1Store]: treesize reduction 152, result has 16.5 percent of original size [2021-10-24 09:53:00,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 206 treesize of output 150 [2021-10-24 09:53:00,545 INFO L354 Elim1Store]: treesize reduction 152, result has 16.5 percent of original size [2021-10-24 09:53:00,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 267 treesize of output 190 [2021-10-24 09:53:00,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:53:00,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-10-24 09:53:00,623 INFO L354 Elim1Store]: treesize reduction 298, result has 8.3 percent of original size [2021-10-24 09:53:00,623 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 2 case distinctions, treesize of input 249 treesize of output 152 [2021-10-24 09:53:01,103 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-10-24 09:53:01,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 78 [2021-10-24 09:53:01,124 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-24 09:53:01,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 44 [2021-10-24 09:53:01,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-24 09:53:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:53:01,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:53:01,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:53:01,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-24 09:53:01,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:53:01,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-24 09:53:03,518 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~last~1.offset (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~last~1.base (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base (store (select |c_#memory_int| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base) c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.offset v_DerPreprocessor_9)))) (store .cse0 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse0 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_8))) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base) c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.offset c_ULTIMATE.start_sll_circular_insert_~new_node~0.base)))) (store .cse1 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse1 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset ULTIMATE.start_sll_circular_insert_~last~1.base))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.base) c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0.offset ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse2 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base (store (select .cse2 c_ULTIMATE.start_sll_circular_insert_~new_node~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset ULTIMATE.start_sll_circular_insert_~last~1.offset))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:53:28,025 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_sll_circular_insert_~last~1.offset_19 (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.base_19 (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset)) (.cse2 (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset))) (select (select (let ((.cse0 (store |c_#memory_int| .cse1 (store (select |c_#memory_int| .cse1) .cse2 v_DerPreprocessor_9)))) (store .cse0 |c_ULTIMATE.start_node_create_#res.base| (store (select .cse0 |c_ULTIMATE.start_node_create_#res.base|) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_8))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) .cse2 |c_ULTIMATE.start_node_create_#res.base|)))) (store .cse3 |c_ULTIMATE.start_node_create_#res.base| (store (select .cse3 |c_ULTIMATE.start_node_create_#res.base|) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.base_19))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) .cse2 ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse4 |c_ULTIMATE.start_node_create_#res.base| (store (select .cse4 |c_ULTIMATE.start_node_create_#res.base|) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.offset_19))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:53:28,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:53:28,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 09:53:28,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:53:28,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-10-24 09:53:28,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:53:28,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 551 [2021-10-24 09:53:30,214 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_sll_circular_insert_~last~1.offset_19 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_insert_~last~1.base_19 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_sll_circular_insert_~new_node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (let ((.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset (_ bv0 32)) .cse4 v_DerPreprocessor_12))) (.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset (_ bv0 32)) .cse4 v_DerPreprocessor_11)))) (let ((.cse2 (select (select .cse6 c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset)) (.cse3 (select (select .cse8 c_ULTIMATE.start_sll_circular_insert_~head.base) c_ULTIMATE.start_sll_circular_insert_~head.offset))) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_10) .cse4 ULTIMATE.start_node_create_~data)))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 v_DerPreprocessor_9))))) (store .cse0 c_ULTIMATE.start_node_create_~temp~0.base (store (select .cse0 c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_DerPreprocessor_8))) (select (select (let ((.cse5 (store .cse6 .cse2 (store (select .cse6 .cse2) .cse3 c_ULTIMATE.start_node_create_~temp~0.base)))) (store .cse5 c_ULTIMATE.start_node_create_~temp~0.base (store (select .cse5 c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.base_19))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select (let ((.cse7 (store .cse8 .cse2 (store (select .cse8 .cse2) .cse3 ULTIMATE.start_sll_circular_insert_~new_node~0.offset)))) (store .cse7 c_ULTIMATE.start_node_create_~temp~0.base (store (select .cse7 c_ULTIMATE.start_node_create_~temp~0.base) ULTIMATE.start_sll_circular_insert_~new_node~0.offset v_ULTIMATE.start_sll_circular_insert_~last~1.offset_19))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-24 09:53:30,546 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 77511 treesize of output 76411 [2021-10-24 09:53:30,942 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 24200401 treesize of output 23594077 [2021-10-24 10:02:05,779 WARN L207 SmtUtils]: Spent 8.58 m on a formula simplification. DAG size of input: 4404 DAG size of output: 4396 [2021-10-24 10:02:38,522 WARN L207 SmtUtils]: Spent 32.71 s on a formula simplification that was a NOOP. DAG size: 4393 [2021-10-24 10:02:38,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:02:38,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875254863] [2021-10-24 10:02:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:02:38,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:02:38,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:02:38,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:02:38,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 10:02:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:02:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-24 10:02:39,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:02:39,212 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 10:02:39,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-10-24 10:02:40,226 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-24 10:02:40,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 52 [2021-10-24 10:02:40,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-10-24 10:02:41,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-24 10:02:41,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-10-24 10:02:41,652 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-24 10:02:41,652 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 62 [2021-10-24 10:02:41,687 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-24 10:02:41,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 56 [2021-10-24 10:02:42,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:42,192 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-10-24 10:02:42,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 67 [2021-10-24 10:02:42,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:43,016 INFO L354 Elim1Store]: treesize reduction 106, result has 12.4 percent of original size [2021-10-24 10:02:43,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 87 [2021-10-24 10:02:43,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 100 [2021-10-24 10:02:43,073 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-24 10:02:43,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 96 [2021-10-24 10:02:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:43,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-10-24 10:02:45,494 INFO L354 Elim1Store]: treesize reduction 331, result has 9.1 percent of original size [2021-10-24 10:02:45,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 264 treesize of output 170 [2021-10-24 10:02:45,662 INFO L354 Elim1Store]: treesize reduction 232, result has 14.1 percent of original size [2021-10-24 10:02:45,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 265 treesize of output 229 [2021-10-24 10:02:45,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:45,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-24 10:02:45,729 INFO L354 Elim1Store]: treesize reduction 176, result has 11.6 percent of original size [2021-10-24 10:02:45,730 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 2 case distinctions, treesize of input 231 treesize of output 158 [2021-10-24 10:02:57,560 INFO L354 Elim1Store]: treesize reduction 57, result has 6.6 percent of original size [2021-10-24 10:02:57,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 88 [2021-10-24 10:02:57,573 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-24 10:02:57,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 44 [2021-10-24 10:02:57,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-10-24 10:02:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:02:57,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:02:57,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:57,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-24 10:02:57,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:57,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-24 10:03:08,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:03:08,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-10-24 10:03:08,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:03:08,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 473 [2021-10-24 10:03:08,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:03:08,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 593 [2021-10-24 10:03:19,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76743 treesize of output 75515 [2021-10-24 10:03:19,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:03:19,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:03:19,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:03:19,750 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:03:19,751 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:03:19,758 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:03:19,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-24 10:03:19,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-24 10:03:20,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:03:20,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:03:20,369 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:03:20,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:03:20 BoogieIcfgContainer [2021-10-24 10:03:20,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:03:20,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:03:20,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:03:20,383 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:03:20,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:31" (3/4) ... [2021-10-24 10:03:20,386 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:03:20,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:03:20,387 INFO L168 Benchmark]: Toolchain (without parser) took 650704.04 ms. Allocated memory was 71.3 MB in the beginning and 734.0 MB in the end (delta: 662.7 MB). Free memory was 54.5 MB in the beginning and 509.8 MB in the end (delta: -455.3 MB). Peak memory consumption was 205.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:03:20,387 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 71.3 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:03:20,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.26 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 46.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:03:20,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.67 ms. Allocated memory is still 71.3 MB. Free memory was 46.9 MB in the beginning and 44.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:03:20,389 INFO L168 Benchmark]: Boogie Preprocessor took 76.43 ms. Allocated memory is still 71.3 MB. Free memory was 44.4 MB in the beginning and 42.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:03:20,389 INFO L168 Benchmark]: RCFGBuilder took 799.86 ms. Allocated memory is still 71.3 MB. Free memory was 42.1 MB in the beginning and 46.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:03:20,389 INFO L168 Benchmark]: TraceAbstraction took 649136.91 ms. Allocated memory was 71.3 MB in the beginning and 734.0 MB in the end (delta: 662.7 MB). Free memory was 45.7 MB in the beginning and 509.8 MB in the end (delta: -464.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:03:20,390 INFO L168 Benchmark]: Witness Printer took 3.86 ms. Allocated memory is still 734.0 MB. Free memory is still 509.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:03:20,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 71.3 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 615.26 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 46.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.67 ms. Allocated memory is still 71.3 MB. Free memory was 46.9 MB in the beginning and 44.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.43 ms. Allocated memory is still 71.3 MB. Free memory was 44.4 MB in the beginning and 42.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 799.86 ms. Allocated memory is still 71.3 MB. Free memory was 42.1 MB in the beginning and 46.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 649136.91 ms. Allocated memory was 71.3 MB in the beginning and 734.0 MB in the end (delta: 662.7 MB). Free memory was 45.7 MB in the beginning and 509.8 MB in the end (delta: -464.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.86 ms. Allocated memory is still 734.0 MB. Free memory is still 509.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 661]: 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: [L629] const int len = 2; [L630] const int data = 1; [L631] SLL s = sll_circular_create(len, data); [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L584] SLL head = node_create(data); [L585] SLL last = head; [L586] COND TRUE len > 1 [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L587] SLL new_head = node_create(data); [L588] new_head->next = head [L589] head = new_head [L590] len-- [L586] COND FALSE !(len > 1) [L592] last->next = head [L593] return head; [L631] SLL s = sll_circular_create(len, data); [L632] const int uneq = 5; [L633] const int mid_index = len / 2; [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L607] SLL new_node = node_create(data); [L608] SLL snd_to_last = ((void *)0); [L609] EXPR \read(*head) [L609] SLL last = *head; [L610] COND TRUE index > 0 [L611] snd_to_last = last [L612] EXPR last->next [L612] last = last->next [L613] index-- [L610] COND FALSE !(index > 0) [L615] COND TRUE \read(snd_to_last) [L616] snd_to_last->next = new_node [L617] new_node->next = last [L635] EXPR \read(s) [L635] SLL ptr = s; [L636] int count = 0; [L638] EXPR ptr->data [L638] COND TRUE data != ptr->data [L661] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 649035.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 23.5ms, AutomataDifference: 180.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 130 SDtfs, 34 SDslu, 132 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 197.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 71.5ms SsaConstructionTime, 173.8ms SatisfiabilityAnalysisTime, 1049.5ms InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 7 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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 [2021-10-24 10:03:20,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059aebaf-ba62-40bd-96b1-995f8aa17244/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...