./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:28:28,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:28:28,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:28:28,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:28:28,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:28:28,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:28:28,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:28:28,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:28:28,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:28:28,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:28:28,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:28:28,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:28:28,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:28:28,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:28:28,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:28:28,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:28:28,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:28:28,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:28:28,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:28:28,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:28:28,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:28:28,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:28:28,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:28:28,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:28:28,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:28:28,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:28:28,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:28:28,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:28:28,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:28:28,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:28:28,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:28:28,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:28:28,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:28:28,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:28:28,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:28:28,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:28:28,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:28:28,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:28:28,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:28:28,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:28:28,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:28:28,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:28:28,545 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:28:28,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:28:28,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:28:28,547 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:28:28,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:28:28,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:28:28,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:28:28,548 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:28:28,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:28:28,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:28:28,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:28:28,550 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:28:28,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:28:28,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:28:28,550 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:28:28,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:28:28,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:28:28,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:28:28,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:28:28,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:28:28,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:28:28,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:28:28,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:28:28,554 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:28:28,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:28:28,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:28:28,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:28:28,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:28:28,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:28:28,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:28:28,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:28:28,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:28:28,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:28:28,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:28:28,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:28:28,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:28:28,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:28:28,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:28:28,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:28:28,566 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_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2021-11-03 04:28:28,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:28:28,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:28:28,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:28:28,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:28:28,955 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:28:28,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-03 04:28:29,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/9bbfc77b1/8a8457fa29fa48dfb0e8fabf8b3f7131/FLAG71767b2ce [2021-11-03 04:28:29,805 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:28:29,808 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-03 04:28:29,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/9bbfc77b1/8a8457fa29fa48dfb0e8fabf8b3f7131/FLAG71767b2ce [2021-11-03 04:28:29,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/9bbfc77b1/8a8457fa29fa48dfb0e8fabf8b3f7131 [2021-11-03 04:28:29,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:28:29,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:28:29,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:28:29,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:28:29,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:28:29,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:28:29" (1/1) ... [2021-11-03 04:28:29,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412cc195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:29, skipping insertion in model container [2021-11-03 04:28:29,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:28:29" (1/1) ... [2021-11-03 04:28:30,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:28:30,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:28:30,505 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_966abc8c-7819-40c9-b1c3-954df4101d32/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-03 04:28:30,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:28:30,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:28:30,609 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_966abc8c-7819-40c9-b1c3-954df4101d32/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-03 04:28:30,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:28:30,656 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:28:30,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30 WrapperNode [2021-11-03 04:28:30,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:28:30,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:28:30,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:28:30,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:28:30,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:28:30,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:28:30,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:28:30,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:28:30,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:28:30,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:28:30,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:28:30,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:28:30,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (1/1) ... [2021-11-03 04:28:30,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:28:30,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:28:30,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:28:30,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:28:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:28:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:28:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:28:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:28:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:28:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:28:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:28:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:28:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:28:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:28:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:28:35,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:28:35,686 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-03 04:28:35,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:28:35 BoogieIcfgContainer [2021-11-03 04:28:35,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:28:35,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:28:35,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:28:35,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:28:35,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:28:29" (1/3) ... [2021-11-03 04:28:35,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec1577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:28:35, skipping insertion in model container [2021-11-03 04:28:35,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:30" (2/3) ... [2021-11-03 04:28:35,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec1577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:28:35, skipping insertion in model container [2021-11-03 04:28:35,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:28:35" (3/3) ... [2021-11-03 04:28:35,701 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2021-11-03 04:28:35,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:28:35,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:28:35,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:28:35,803 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 [2021-11-03 04:28:35,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:28:35,822 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) [2021-11-03 04:28:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:28:35,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:35,830 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:35,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:35,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:35,838 INFO L85 PathProgramCache]: Analyzing trace with hash 361779440, now seen corresponding path program 1 times [2021-11-03 04:28:35,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:28:35,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325866869] [2021-11-03 04:28:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:35,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:28:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:36,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:28:36,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325866869] [2021-11-03 04:28:36,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325866869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:36,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:36,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:28:36,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867648504] [2021-11-03 04:28:36,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:28:36,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:28:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:28:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:28:36,268 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) [2021-11-03 04:28:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:36,387 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2021-11-03 04:28:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:28:36,390 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 [2021-11-03 04:28:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:36,402 INFO L225 Difference]: With dead ends: 47 [2021-11-03 04:28:36,403 INFO L226 Difference]: Without dead ends: 19 [2021-11-03 04:28:36,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:28:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-03 04:28:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-03 04:28:36,450 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) [2021-11-03 04:28:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-03 04:28:36,454 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2021-11-03 04:28:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:36,455 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-03 04:28:36,456 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) [2021-11-03 04:28:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-11-03 04:28:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:28:36,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:36,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:36,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:28:36,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2134161000, now seen corresponding path program 1 times [2021-11-03 04:28:36,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:28:36,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723908440] [2021-11-03 04:28:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:36,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:28:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:28:36,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:28:36,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723908440] [2021-11-03 04:28:36,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723908440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:36,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:36,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:28:36,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257526863] [2021-11-03 04:28:36,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:28:36,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:28:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:28:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:28:36,669 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) [2021-11-03 04:28:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:36,868 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-03 04:28:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:28:36,869 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 [2021-11-03 04:28:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:36,871 INFO L225 Difference]: With dead ends: 30 [2021-11-03 04:28:36,871 INFO L226 Difference]: Without dead ends: 19 [2021-11-03 04:28:36,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:28:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-03 04:28:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-03 04:28:36,877 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) [2021-11-03 04:28:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-03 04:28:36,878 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2021-11-03 04:28:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:36,879 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-03 04:28:36,879 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) [2021-11-03 04:28:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-03 04:28:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:28:36,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:36,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:36,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:28:36,882 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1630178553, now seen corresponding path program 1 times [2021-11-03 04:28:36,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:28:36,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816506741] [2021-11-03 04:28:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:36,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:28:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:38,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:28:38,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816506741] [2021-11-03 04:28:38,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816506741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:28:38,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911459724] [2021-11-03 04:28:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:38,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:28:38,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:28:38,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:28:38,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:28:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:38,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-03 04:28:38,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:39,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:39,131 INFO L354 Elim1Store]: treesize reduction 118, result has 18.1 percent of original size [2021-11-03 04:28:39,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 18 treesize of output 36 [2021-11-03 04:28:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:40,084 INFO L354 Elim1Store]: treesize reduction 136, result has 21.4 percent of original size [2021-11-03 04:28:40,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 75 [2021-11-03 04:28:41,013 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 67 treesize of output 54 [2021-11-03 04:28:41,026 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 54 treesize of output 43 [2021-11-03 04:28:41,044 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 43 treesize of output 27 [2021-11-03 04:28:41,413 INFO L354 Elim1Store]: treesize reduction 166, result has 16.2 percent of original size [2021-11-03 04:28:41,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 296 treesize of output 188 [2021-11-03 04:28:41,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:41,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-11-03 04:28:41,488 INFO L354 Elim1Store]: treesize reduction 116, result has 18.9 percent of original size [2021-11-03 04:28:41,489 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 2 case distinctions, treesize of input 260 treesize of output 203 [2021-11-03 04:28:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:41,610 INFO L354 Elim1Store]: treesize reduction 160, result has 27.6 percent of original size [2021-11-03 04:28:41,611 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 185 treesize of output 219 [2021-11-03 04:28:42,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:42,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:42,361 INFO L354 Elim1Store]: treesize reduction 489, result has 7.6 percent of original size [2021-11-03 04:28:42,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 229 treesize of output 172 [2021-11-03 04:28:42,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:42,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-03 04:28:42,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:42,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-03 04:28:42,501 INFO L354 Elim1Store]: treesize reduction 223, result has 11.2 percent of original size [2021-11-03 04:28:42,501 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 3 case distinctions, treesize of input 192 treesize of output 199 [2021-11-03 04:28:42,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:42,546 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-03 04:28:42,547 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 171 treesize of output 163 [2021-11-03 04:28:43,802 INFO L354 Elim1Store]: treesize reduction 253, result has 3.1 percent of original size [2021-11-03 04:28:43,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 1590 treesize of output 983 [2021-11-03 04:28:43,861 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-03 04:28:43,862 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 1617 treesize of output 1523 [2021-11-03 04:28:43,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:43,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1467 [2021-11-03 04:28:43,998 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 1467 treesize of output 1455 [2021-11-03 04:28:44,077 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-03 04:28:44,078 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 1452 treesize of output 1436 [2021-11-03 04:28:44,158 INFO L354 Elim1Store]: treesize reduction 100, result has 13.0 percent of original size [2021-11-03 04:28:44,159 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 1433 treesize of output 1408 [2021-11-03 04:28:44,176 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 04:28:44,789 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 [2021-11-03 04:28:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:44,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:45,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-03 04:28:45,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [375900486] [2021-11-03 04:28:45,161 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-03 04:28:45,164 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:28:45,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:28:45,182 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:28:45,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:28:45,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:45,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:28:45,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:45,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:28:45,245 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:28:45,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:28:45,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:28:45,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:28:45,266 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@42bacac9 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:609) 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) [2021-11-03 04:28:45,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:28:45,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-03 04:28:45,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251047587] [2021-11-03 04:28:45,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:28:45,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:28:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:28:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:28:45,271 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) [2021-11-03 04:28:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:28:45,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 04:28:45,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-03 04:28:45,495 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@42bacac9 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:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) 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) [2021-11-03 04:28:45,498 INFO L168 Benchmark]: Toolchain (without parser) took 15514.91 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 58.9 MB in the beginning and 92.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:28:45,498 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 96.5 MB. Free memory was 77.1 MB in the beginning and 77.0 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:28:45,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.69 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 64.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:28:45,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.73 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 62.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:28:45,500 INFO L168 Benchmark]: Boogie Preprocessor took 55.64 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 60.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:28:45,500 INFO L168 Benchmark]: RCFGBuilder took 4880.69 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 52.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:28:45,501 INFO L168 Benchmark]: TraceAbstraction took 9805.26 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 51.7 MB in the beginning and 92.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:28:45,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 96.5 MB. Free memory was 77.1 MB in the beginning and 77.0 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 668.69 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 64.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.73 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 62.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.64 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 60.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4880.69 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 52.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9805.26 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 51.7 MB in the beginning and 92.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 4.3 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@42bacac9 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@42bacac9: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-03 04:28:45,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:28:48,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:28:48,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:28:48,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:28:48,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:28:48,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:28:48,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:28:48,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:28:48,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:28:48,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:28:48,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:28:48,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:28:48,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:28:48,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:28:48,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:28:48,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:28:48,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:28:48,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:28:48,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:28:48,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:28:48,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:28:48,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:28:48,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:28:48,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:28:48,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:28:48,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:28:48,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:28:48,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:28:48,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:28:48,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:28:48,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:28:48,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:28:48,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:28:48,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:28:48,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:28:48,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:28:48,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:28:48,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:28:48,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:28:48,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:28:48,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:28:48,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:28:48,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:28:48,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:28:48,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:28:48,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:28:48,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:28:48,830 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:28:48,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:28:48,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:28:48,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:28:48,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:28:48,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:28:48,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:28:48,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:28:48,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:28:48,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:28:48,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:28:48,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:28:48,836 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:28:48,837 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:28:48,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:28:48,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:28:48,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:28:48,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:28:48,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:28:48,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:28:48,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:28:48,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:28:48,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:28:48,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:28:48,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:28:48,840 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:28:48,840 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:28:48,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:28:48,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:28:48,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:28:48,841 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_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2021-11-03 04:28:49,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:28:49,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:28:49,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:28:49,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:28:49,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:28:49,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-03 04:28:49,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/75639d0b2/f475519c33174cf2908a212ab57cac98/FLAG9d942b8ac [2021-11-03 04:28:50,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:28:50,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-03 04:28:50,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/75639d0b2/f475519c33174cf2908a212ab57cac98/FLAG9d942b8ac [2021-11-03 04:28:50,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/data/75639d0b2/f475519c33174cf2908a212ab57cac98 [2021-11-03 04:28:50,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:28:50,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:28:50,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:28:50,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:28:50,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:28:50,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:28:50" (1/1) ... [2021-11-03 04:28:50,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1f60a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:50, skipping insertion in model container [2021-11-03 04:28:50,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:28:50" (1/1) ... [2021-11-03 04:28:50,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:28:50,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:28:51,227 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_966abc8c-7819-40c9-b1c3-954df4101d32/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-03 04:28:51,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:28:51,254 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:28:51,333 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_966abc8c-7819-40c9-b1c3-954df4101d32/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-03 04:28:51,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:28:51,387 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:28:51,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51 WrapperNode [2021-11-03 04:28:51,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:28:51,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:28:51,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:28:51,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:28:51,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:28:51,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:28:51,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:28:51,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:28:51,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:28:51,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:28:51,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:28:51,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:28:51,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (1/1) ... [2021-11-03 04:28:51,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:28:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:28:51,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:28:51,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:28:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:28:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:28:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:28:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:28:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:28:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:28:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:28:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:28:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:28:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:28:51,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:28:52,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:28:52,865 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-03 04:28:52,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:28:52 BoogieIcfgContainer [2021-11-03 04:28:52,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:28:52,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:28:52,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:28:52,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:28:52,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:28:50" (1/3) ... [2021-11-03 04:28:52,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367d7282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:28:52, skipping insertion in model container [2021-11-03 04:28:52,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:28:51" (2/3) ... [2021-11-03 04:28:52,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367d7282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:28:52, skipping insertion in model container [2021-11-03 04:28:52,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:28:52" (3/3) ... [2021-11-03 04:28:52,879 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2021-11-03 04:28:52,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:28:52,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:28:52,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:28:52,977 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 [2021-11-03 04:28:52,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:28:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:28:53,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:53,023 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:53,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash -29659474, now seen corresponding path program 1 times [2021-11-03 04:28:53,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:53,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317854050] [2021-11-03 04:28:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:53,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:53,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:53,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:53,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:28:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:53,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:28:53,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:53,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:53,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:53,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317854050] [2021-11-03 04:28:53,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317854050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:53,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:53,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:28:53,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886452434] [2021-11-03 04:28:53,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:28:53,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:28:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:28:53,555 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 43 states have internal predecessors, (64), 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) [2021-11-03 04:28:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:53,602 INFO L93 Difference]: Finished difference Result 75 states and 110 transitions. [2021-11-03 04:28:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:28:53,604 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 [2021-11-03 04:28:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:53,615 INFO L225 Difference]: With dead ends: 75 [2021-11-03 04:28:53,616 INFO L226 Difference]: Without dead ends: 34 [2021-11-03 04:28:53,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:28:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-03 04:28:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-03 04:28:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2021-11-03 04:28:53,662 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2021-11-03 04:28:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:53,662 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2021-11-03 04:28:53,663 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) [2021-11-03 04:28:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-11-03 04:28:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:28:53,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:53,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:53,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:53,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:53,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash -144176078, now seen corresponding path program 1 times [2021-11-03 04:28:53,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:53,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596671238] [2021-11-03 04:28:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:53,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:53,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:53,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:53,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:28:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:54,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:28:54,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:54,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:28:54,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:54,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596671238] [2021-11-03 04:28:54,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596671238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:54,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:54,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:28:54,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995863591] [2021-11-03 04:28:54,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:28:54,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:28:54,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:28:54,413 INFO L87 Difference]: Start difference. First operand 34 states and 43 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) [2021-11-03 04:28:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:54,454 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2021-11-03 04:28:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:28:54,455 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 [2021-11-03 04:28:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:54,459 INFO L225 Difference]: With dead ends: 63 [2021-11-03 04:28:54,460 INFO L226 Difference]: Without dead ends: 40 [2021-11-03 04:28:54,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:28:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-03 04:28:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2021-11-03 04:28:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-11-03 04:28:54,485 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2021-11-03 04:28:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:54,486 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-11-03 04:28:54,487 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) [2021-11-03 04:28:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-11-03 04:28:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:28:54,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:54,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:54,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:54,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:54,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:54,713 INFO L85 PathProgramCache]: Analyzing trace with hash 906905598, now seen corresponding path program 1 times [2021-11-03 04:28:54,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:54,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639223000] [2021-11-03 04:28:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:54,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:54,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:54,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:28:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:54,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:28:54,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:28:55,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:28:56,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:56,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639223000] [2021-11-03 04:28:56,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639223000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:56,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:56,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:28:56,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257950483] [2021-11-03 04:28:56,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:28:56,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:28:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:28:56,021 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) [2021-11-03 04:28:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:56,103 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2021-11-03 04:28:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:28:56,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) Word has length 23 [2021-11-03 04:28:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:56,105 INFO L225 Difference]: With dead ends: 53 [2021-11-03 04:28:56,105 INFO L226 Difference]: Without dead ends: 36 [2021-11-03 04:28:56,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:28:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-03 04:28:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-03 04:28:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-11-03 04:28:56,116 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 23 [2021-11-03 04:28:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:56,117 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-11-03 04:28:56,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) [2021-11-03 04:28:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-11-03 04:28:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 04:28:56,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:56,122 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:56,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:56,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:56,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:28:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash -415005991, now seen corresponding path program 1 times [2021-11-03 04:28:56,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:56,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034610979] [2021-11-03 04:28:56,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:56,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:56,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:56,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:56,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:28:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:56,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-03 04:28:56,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:56,942 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:28:56,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-03 04:28:57,454 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-03 04:28:57,454 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 31 treesize of output 48 [2021-11-03 04:28:57,974 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 [2021-11-03 04:28:58,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-03 04:28:58,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:28:58,410 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 25 treesize of output 13 [2021-11-03 04:28:58,776 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:28:58,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 75 [2021-11-03 04:28:58,830 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-03 04:28:58,830 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 69 [2021-11-03 04:28:59,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:59,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034610979] [2021-11-03 04:28:59,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_dll_circular_create_~head~0.offset] [2021-11-03 04:28:59,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2015392598] [2021-11-03 04:28:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:59,126 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:28:59,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:28:59,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:28:59,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966abc8c-7819-40c9-b1c3-954df4101d32/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-03 04:28:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:59,922 WARN L261 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-03 04:28:59,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:59,993 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:28:59,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-03 04:29:00,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:00,606 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-11-03 04:29:00,607 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 [2021-11-03 04:29:01,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:29:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:01,462 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 25 treesize of output 13 [2021-11-03 04:29:01,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 04:29:01,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 04:29:01,905 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-03 04:29:01,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 115 [2021-11-03 04:29:01,959 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-03 04:29:01,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 95 [2021-11-03 04:29:01,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:01,976 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 81 treesize of output 69 [2021-11-03 04:29:03,286 INFO L354 Elim1Store]: treesize reduction 184, result has 12.4 percent of original size [2021-11-03 04:29:03,286 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 221 treesize of output 201 [2021-11-03 04:29:03,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:03,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-03 04:29:03,430 INFO L354 Elim1Store]: treesize reduction 158, result has 13.7 percent of original size [2021-11-03 04:29:03,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 181 [2021-11-03 04:29:03,529 INFO L354 Elim1Store]: treesize reduction 182, result has 13.3 percent of original size [2021-11-03 04:29:03,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 165 treesize of output 131 [2021-11-03 04:29:04,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:04,095 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-03 04:29:04,102 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 75 treesize of output 79 [2021-11-03 04:29:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:05,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:05,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:29:05,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:05,796 INFO L354 Elim1Store]: treesize reduction 450, result has 8.5 percent of original size [2021-11-03 04:29:05,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 341 treesize of output 230 [2021-11-03 04:29:05,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:29:05,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:06,295 INFO L354 Elim1Store]: treesize reduction 434, result has 9.2 percent of original size [2021-11-03 04:29:06,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 252 treesize of output 236 [2021-11-03 04:29:06,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:06,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-11-03 04:29:06,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:29:06,334 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 215 treesize of output 203 [2021-11-03 04:29:06,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:29:06,380 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-03 04:29:06,380 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 193 treesize of output 192 [2021-11-03 04:29:06,388 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 04:29:26,162 WARN L207 SmtUtils]: Spent 15.81 s on a formula simplification. DAG size of input: 221 DAG size of output: 41 [2021-11-03 04:29:26,163 INFO L354 Elim1Store]: treesize reduction 1159, result has 4.9 percent of original size [2021-11-03 04:29:26,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 686 treesize of output 397 [2021-11-03 04:29:27,633 INFO L354 Elim1Store]: treesize reduction 1105, result has 4.7 percent of original size [2021-11-03 04:29:27,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 39 case distinctions, treesize of input 868 treesize of output 482 [2021-11-03 04:29:27,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:27,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-11-03 04:29:27,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:27,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-11-03 04:29:27,762 INFO L354 Elim1Store]: treesize reduction 214, result has 11.2 percent of original size [2021-11-03 04:29:27,763 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 2 case distinctions, treesize of input 540 treesize of output 483 [2021-11-03 04:29:27,780 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 446 treesize of output 386 [2021-11-03 04:29:27,784 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 04:29:28,477 INFO L354 Elim1Store]: treesize reduction 236, result has 6.7 percent of original size [2021-11-03 04:29:28,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 345 treesize of output 162 [2021-11-03 04:29:28,528 INFO L354 Elim1Store]: treesize reduction 188, result has 0.5 percent of original size [2021-11-03 04:29:28,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 135 treesize of output 76 [2021-11-03 04:29:28,899 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 [2021-11-03 04:29:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:29:29,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:29,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:29,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-03 04:29:29,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:29,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-03 04:29:29,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:29,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-03 04:29:29,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:29,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:29:45,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:45,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 730 [2021-11-03 04:29:45,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:45,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 738 [2021-11-03 04:29:45,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:45,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1700 [2021-11-03 04:29:45,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:29:45,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2391 [2021-11-03 04:29:47,618 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (let ((.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset)) (.cse8 (bvadd (_ bv8 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse11 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset (_ bv0 32)) .cse4 (_ bv0 32)) .cse8 v_DerPreprocessor_11)))) (let ((.cse16 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (store (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset (_ bv0 32)) .cse4 (_ bv0 32)) .cse8 v_DerPreprocessor_12))) (.cse6 (select (select .cse11 c_ULTIMATE.start_dll_circular_insert_~head.base) c_ULTIMATE.start_dll_circular_insert_~head.offset))) (let ((.cse17 (select .cse16 .cse6)) (.cse7 (select (select .cse16 c_ULTIMATE.start_dll_circular_insert_~head.base) c_ULTIMATE.start_dll_circular_insert_~head.offset))) (let ((.cse15 (select .cse17 .cse7)) (.cse12 (select .cse11 .cse6))) (let ((.cse1 (select .cse12 .cse7)) (.cse2 (bvadd (_ bv4 32) .cse15))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse5 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (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 v_DerPreprocessor_9) .cse8 ULTIMATE.start_node_create_~data)))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_DerPreprocessor_8))))) (store .cse3 c_ULTIMATE.start_node_create_~temp~0.base (store (store (select .cse3 c_ULTIMATE.start_node_create_~temp~0.base) .cse4 v_DerPreprocessor_7) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_6))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) (select (select (let ((.cse9 (let ((.cse10 (store .cse11 .cse6 (store .cse12 .cse7 c_ULTIMATE.start_node_create_~temp~0.base)))) (store .cse10 c_ULTIMATE.start_node_create_~temp~0.base (store (store (select .cse10 c_ULTIMATE.start_node_create_~temp~0.base) .cse4 .cse6) c_ULTIMATE.start_node_create_~temp~0.offset .cse1))))) (store .cse9 .cse1 (store (select .cse9 .cse1) .cse2 c_ULTIMATE.start_node_create_~temp~0.base))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv8 32) (select (select (let ((.cse13 (let ((.cse14 (store .cse16 .cse6 (store .cse17 .cse7 c_ULTIMATE.start_node_create_~temp~0.offset)))) (store .cse14 c_ULTIMATE.start_node_create_~temp~0.base (store (store (select .cse14 c_ULTIMATE.start_node_create_~temp~0.base) .cse4 .cse7) c_ULTIMATE.start_node_create_~temp~0.offset .cse15))))) (store .cse13 .cse1 (store (select .cse13 .cse1) .cse2 c_ULTIMATE.start_node_create_~temp~0.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 [2021-11-03 04:30:04,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:30:04,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7162 [2021-11-03 04:30:04,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:30:04,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7402 [2021-11-03 04:32:45,943 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_ULTIMATE.start_node_create_~temp~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (ULTIMATE.start_dll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse9 (bvadd (_ bv4 32) c_ULTIMATE.start_dll_circular_create_~new_head~0.offset))) (let ((.cse19 (let ((.cse22 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_dll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_dll_circular_create_~last~0.base) ULTIMATE.start_dll_circular_create_~last~0.offset c_ULTIMATE.start_dll_circular_create_~new_head~0.offset)))) (store .cse22 c_ULTIMATE.start_dll_circular_create_~new_head~0.base (store (select .cse22 c_ULTIMATE.start_dll_circular_create_~new_head~0.base) .cse9 ULTIMATE.start_dll_circular_create_~last~0.offset)))) (.cse20 (let ((.cse21 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_circular_create_~last~0.base) ULTIMATE.start_dll_circular_create_~last~0.offset c_ULTIMATE.start_dll_circular_create_~new_head~0.base)))) (store .cse21 c_ULTIMATE.start_dll_circular_create_~new_head~0.base (store (select .cse21 c_ULTIMATE.start_dll_circular_create_~new_head~0.base) .cse9 c_ULTIMATE.start_dll_circular_create_~last~0.base))))) (or (= (let ((.cse12 (store .cse20 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (store (select .cse20 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) v_DerPreprocessor_11)))) (let ((.cse17 (store .cse19 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (store (select .cse19 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) v_DerPreprocessor_12))) (.cse5 (select (select .cse12 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (let ((.cse18 (select .cse17 .cse5)) (.cse6 (select (select .cse17 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (let ((.cse16 (select .cse18 .cse6)) (.cse13 (select .cse12 .cse5))) (let ((.cse1 (select .cse13 .cse6)) (.cse2 (bvadd .cse16 (_ bv4 32)))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse4 (let ((.cse7 (let ((.cse8 (store |c_#memory_int| c_ULTIMATE.start_dll_circular_create_~last~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_circular_create_~last~0.base) ULTIMATE.start_dll_circular_create_~last~0.offset v_DerPreprocessor_14)))) (store .cse8 c_ULTIMATE.start_dll_circular_create_~new_head~0.base (store (select .cse8 c_ULTIMATE.start_dll_circular_create_~new_head~0.base) .cse9 v_DerPreprocessor_13))))) (store .cse7 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (store (select .cse7 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv0 32) v_DerPreprocessor_10) (_ bv4 32) v_DerPreprocessor_9) (_ bv8 32) ULTIMATE.start_node_create_~data))))) (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 v_DerPreprocessor_8))))) (store .cse3 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (select .cse3 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv4 32) v_DerPreprocessor_7) (_ bv0 32) v_DerPreprocessor_6))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) (select (select (let ((.cse10 (let ((.cse11 (store .cse12 .cse5 (store .cse13 .cse6 v_ULTIMATE.start_node_create_~temp~0.base_21)))) (store .cse11 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (select .cse11 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv4 32) .cse5) (_ bv0 32) .cse1))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 v_ULTIMATE.start_node_create_~temp~0.base_21))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv8 32) (select (select (let ((.cse14 (let ((.cse15 (store .cse17 .cse5 (store .cse18 .cse6 (_ bv0 32))))) (store .cse15 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (select .cse15 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv4 32) .cse6) (_ bv0 32) .cse16))))) (store .cse14 .cse1 (store (select .cse14 .cse1) .cse2 (_ bv0 32)))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))))))) c_ULTIMATE.start_main_~data~0) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_node_create_~temp~0.base_21))) (not (bvult v_ULTIMATE.start_node_create_~temp~0.base_21 |c_#StackHeapBarrier|)) (not (= c_ULTIMATE.start_dll_circular_create_~new_head~0.offset (select (select .cse19 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (not (= (select (select .cse20 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) c_ULTIMATE.start_dll_circular_create_~new_head~0.base)))))) is different from true [2021-11-03 04:32:46,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:32:46,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15722 [2021-11-03 04:33:42,085 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_ULTIMATE.start_node_create_~temp~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (ULTIMATE.start_dll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse9 (bvadd (_ bv4 32) c_ULTIMATE.start_dll_circular_create_~new_head~0.offset)) (.cse11 (bvadd (_ bv4 32) c_ULTIMATE.start_dll_circular_create_~head~0.offset))) (let ((.cse21 (let ((.cse25 (let ((.cse26 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_dll_circular_create_~head~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_dll_circular_create_~head~0.base) .cse11 c_ULTIMATE.start_dll_circular_create_~new_head~0.offset)))) (store .cse26 c_ULTIMATE.start_dll_circular_create_~last~0.base (store (select .cse26 c_ULTIMATE.start_dll_circular_create_~last~0.base) ULTIMATE.start_dll_circular_create_~last~0.offset c_ULTIMATE.start_dll_circular_create_~new_head~0.offset))))) (store .cse25 c_ULTIMATE.start_dll_circular_create_~new_head~0.base (store (select .cse25 c_ULTIMATE.start_dll_circular_create_~new_head~0.base) .cse9 ULTIMATE.start_dll_circular_create_~last~0.offset)))) (.cse22 (let ((.cse23 (let ((.cse24 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_circular_create_~head~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_circular_create_~head~0.base) .cse11 c_ULTIMATE.start_dll_circular_create_~new_head~0.base)))) (store .cse24 c_ULTIMATE.start_dll_circular_create_~last~0.base (store (select .cse24 c_ULTIMATE.start_dll_circular_create_~last~0.base) ULTIMATE.start_dll_circular_create_~last~0.offset c_ULTIMATE.start_dll_circular_create_~new_head~0.base))))) (store .cse23 c_ULTIMATE.start_dll_circular_create_~new_head~0.base (store (select .cse23 c_ULTIMATE.start_dll_circular_create_~new_head~0.base) .cse9 c_ULTIMATE.start_dll_circular_create_~last~0.base))))) (or (= (let ((.cse14 (store .cse22 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (store (select .cse22 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) v_DerPreprocessor_11)))) (let ((.cse19 (store .cse21 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (store (select .cse21 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) v_DerPreprocessor_12))) (.cse5 (select (select .cse14 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (let ((.cse20 (select .cse19 .cse5)) (.cse6 (select (select .cse19 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (let ((.cse18 (select .cse20 .cse6)) (.cse15 (select .cse14 .cse5))) (let ((.cse1 (select .cse15 .cse6)) (.cse2 (bvadd (_ bv4 32) .cse18))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse4 (let ((.cse7 (let ((.cse8 (let ((.cse10 (store |c_#memory_int| c_ULTIMATE.start_dll_circular_create_~head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_circular_create_~head~0.base) .cse11 v_DerPreprocessor_15)))) (store .cse10 c_ULTIMATE.start_dll_circular_create_~last~0.base (store (select .cse10 c_ULTIMATE.start_dll_circular_create_~last~0.base) ULTIMATE.start_dll_circular_create_~last~0.offset v_DerPreprocessor_14))))) (store .cse8 c_ULTIMATE.start_dll_circular_create_~new_head~0.base (store (select .cse8 c_ULTIMATE.start_dll_circular_create_~new_head~0.base) .cse9 v_DerPreprocessor_13))))) (store .cse7 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (store (select .cse7 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv0 32) v_DerPreprocessor_10) (_ bv4 32) v_DerPreprocessor_9) (_ bv8 32) ULTIMATE.start_node_create_~data))))) (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 v_DerPreprocessor_8))))) (store .cse3 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (select .cse3 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv4 32) v_DerPreprocessor_7) (_ bv0 32) v_DerPreprocessor_6))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) (select (select (let ((.cse12 (let ((.cse13 (store .cse14 .cse5 (store .cse15 .cse6 v_ULTIMATE.start_node_create_~temp~0.base_21)))) (store .cse13 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (select .cse13 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv4 32) .cse5) (_ bv0 32) .cse1))))) (store .cse12 .cse1 (store (select .cse12 .cse1) .cse2 v_ULTIMATE.start_node_create_~temp~0.base_21))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv8 32) (select (select (let ((.cse16 (let ((.cse17 (store .cse19 .cse5 (store .cse20 .cse6 (_ bv0 32))))) (store .cse17 v_ULTIMATE.start_node_create_~temp~0.base_21 (store (store (select .cse17 v_ULTIMATE.start_node_create_~temp~0.base_21) (_ bv4 32) .cse6) (_ bv0 32) .cse18))))) (store .cse16 .cse1 (store (select .cse16 .cse1) .cse2 (_ bv0 32)))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))))))) c_ULTIMATE.start_main_~data~0) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_node_create_~temp~0.base_21))) (not (bvult v_ULTIMATE.start_node_create_~temp~0.base_21 |c_#StackHeapBarrier|)) (not (= (select (select .cse21 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) c_ULTIMATE.start_dll_circular_create_~new_head~0.offset)) (not (= (select (select .cse22 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) c_ULTIMATE.start_dll_circular_create_~new_head~0.base)))))) is different from false [2021-11-03 04:33:43,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:43,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29034