./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V --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 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:13:40,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:13:40,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:13:40,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:13:40,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:13:40,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:13:40,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:13:40,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:13:40,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:13:40,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:13:40,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:13:40,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:13:40,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:13:40,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:13:40,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:13:40,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:13:40,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:13:40,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:13:40,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:13:40,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:13:40,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:13:40,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:13:40,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:13:40,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:13:40,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:13:40,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:13:40,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:13:40,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:13:40,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:13:40,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:13:40,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:13:40,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:13:40,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:13:40,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:13:40,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:13:40,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:13:40,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:13:40,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:13:40,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:13:40,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:13:40,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:13:40,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:13:40,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:13:40,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:13:40,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:13:40,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:13:40,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:13:40,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:13:40,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:13:40,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:13:40,571 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:13:40,572 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:13:40,572 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:13:40,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:13:40,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:13:40,573 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:13:40,573 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:13:40,573 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:13:40,574 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:13:40,574 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:13:40,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:13:40,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:13:40,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:13:40,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:13:40,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:13:40,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:13:40,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:13:40,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:13:40,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:13:40,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:13:40,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:13:40,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:13:40,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:13:40,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:13:40,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:13:40,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:13:40,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:13:40,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:13:40,580 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:13:40,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:13:40,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:13:40,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:13:40,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:13:40,582 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_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2021-11-23 02:13:40,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:13:40,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:13:40,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:13:40,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:13:40,882 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:13:40,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-23 02:13:40,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/324a3a4df/78655de62bee4f12908aa0932d94ba45/FLAG492420996 [2021-11-23 02:13:41,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:13:41,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-23 02:13:41,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/324a3a4df/78655de62bee4f12908aa0932d94ba45/FLAG492420996 [2021-11-23 02:13:41,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/324a3a4df/78655de62bee4f12908aa0932d94ba45 [2021-11-23 02:13:41,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:13:41,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:13:41,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:13:41,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:13:41,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:13:41,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:41" (1/1) ... [2021-11-23 02:13:41,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d18224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:41, skipping insertion in model container [2021-11-23 02:13:41,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:41" (1/1) ... [2021-11-23 02:13:41,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:13:41,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:13:42,304 WARN L230 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_d5e29ab9-9042-40f0-9995-760781cdecdc/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-23 02:13:42,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:13:42,321 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:13:42,377 WARN L230 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_d5e29ab9-9042-40f0-9995-760781cdecdc/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-23 02:13:42,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:13:42,416 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:13:42,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42 WrapperNode [2021-11-23 02:13:42,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:13:42,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:13:42,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:13:42,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:13:42,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,494 INFO L137 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-11-23 02:13:42,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:13:42,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:13:42,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:13:42,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:13:42,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:13:42,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:13:42,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:13:42,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:13:42,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:13:42,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:42,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:13:42,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:13:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 02:13:42,609 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 02:13:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:13:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:13:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:13:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:13:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:13:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:13:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:13:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:13:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:13:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:13:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:13:42,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:13:42,718 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:13:42,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:13:42,760 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-23 02:13:43,048 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:13:43,232 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:13:43,232 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 02:13:43,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:43 BoogieIcfgContainer [2021-11-23 02:13:43,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:13:43,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:13:43,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:13:43,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:13:43,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:13:41" (1/3) ... [2021-11-23 02:13:43,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583cb7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:43, skipping insertion in model container [2021-11-23 02:13:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (2/3) ... [2021-11-23 02:13:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583cb7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:43, skipping insertion in model container [2021-11-23 02:13:43,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:43" (3/3) ... [2021-11-23 02:13:43,246 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2021-11-23 02:13:43,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:13:43,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:13:43,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:13:43,313 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 [2021-11-23 02:13:43,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:13:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:13:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:13:43,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:43,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:43,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash -849827724, now seen corresponding path program 1 times [2021-11-23 02:13:43,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:43,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431999093] [2021-11-23 02:13:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:43,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:13:43,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431999093] [2021-11-23 02:13:43,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431999093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:43,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:43,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:13:43,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751473036] [2021-11-23 02:13:43,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:43,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:43,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:43,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:43,597 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 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) [2021-11-23 02:13:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:44,416 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2021-11-23 02:13:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:44,419 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 [2021-11-23 02:13:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:44,427 INFO L225 Difference]: With dead ends: 43 [2021-11-23 02:13:44,427 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 02:13:44,431 INFO L932 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 [2021-11-23 02:13:44,435 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:44,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:13:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 02:13:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-11-23 02:13:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 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) [2021-11-23 02:13:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-11-23 02:13:44,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 8 [2021-11-23 02:13:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:44,471 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-23 02:13:44,471 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) [2021-11-23 02:13:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2021-11-23 02:13:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:13:44,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:44,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:44,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:13:44,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash 166856345, now seen corresponding path program 1 times [2021-11-23 02:13:44,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:44,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315671526] [2021-11-23 02:13:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:44,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:13:44,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315671526] [2021-11-23 02:13:44,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315671526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:44,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138907983] [2021-11-23 02:13:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:44,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:44,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:44,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:44,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:13:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:44,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:13:44,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:13:44,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:13:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138907983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:13:44,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1024072205] [2021-11-23 02:13:44,891 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:13:44,891 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:13:44,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:13:44,929 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:13:44,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:13:45,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,078 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:13:45,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:13:45,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:13:45,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,212 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 02:13:45,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2021-11-23 02:13:45,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,285 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:13:45,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 02:13:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:13:45,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2021-11-23 02:13:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 02:13:45,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:13:45,744 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-23 02:13:45,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 286 treesize of output 295 [2021-11-23 02:13:45,868 INFO L354 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2021-11-23 02:13:45,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 292 treesize of output 308 [2021-11-23 02:13:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,607 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 02:13:46,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 500 treesize of output 486 [2021-11-23 02:13:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,657 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:13:46,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 485 treesize of output 470 [2021-11-23 02:13:46,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:46,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 466 treesize of output 457 [2021-11-23 02:13:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:46,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 442 [2021-11-23 02:13:46,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:46,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:46,888 INFO L354 Elim1Store]: treesize reduction 187, result has 17.6 percent of original size [2021-11-23 02:13:46,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 436 treesize of output 439 [2021-11-23 02:13:46,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:46,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:46,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:47,015 INFO L354 Elim1Store]: treesize reduction 301, result has 16.2 percent of original size [2021-11-23 02:13:47,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 572 treesize of output 575 [2021-11-23 02:13:47,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 366 [2021-11-23 02:13:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,351 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-23 02:13:47,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 394 treesize of output 349 [2021-11-23 02:13:47,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-23 02:13:47,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:47,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:47,684 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 02:13:47,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 448 treesize of output 325 [2021-11-23 02:13:47,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,894 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:13:47,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 37 [2021-11-23 02:13:48,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:13:48,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:13:48,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,156 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-23 02:13:48,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 229 [2021-11-23 02:13:48,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,279 INFO L354 Elim1Store]: treesize reduction 128, result has 19.0 percent of original size [2021-11-23 02:13:48,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 265 treesize of output 264 [2021-11-23 02:13:48,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 281 [2021-11-23 02:13:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,418 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 57 treesize of output 11 [2021-11-23 02:13:48,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 23 [2021-11-23 02:13:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 33 [2021-11-23 02:13:48,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 78 [2021-11-23 02:13:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 71 [2021-11-23 02:13:48,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:13:48,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:13:48,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:48,803 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:13:48,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 02:13:48,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:13:48,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:48,924 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:13:48,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 02:13:49,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:49,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:49,041 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:49,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:13:49,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:13:49,088 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:13:49,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1024072205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:49,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:13:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 8 [2021-11-23 02:13:49,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390089145] [2021-11-23 02:13:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:49,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:13:49,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:13:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:13:49,986 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2021-11-23 02:13:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:50,471 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2021-11-23 02:13:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:13:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) Word has length 11 [2021-11-23 02:13:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:50,472 INFO L225 Difference]: With dead ends: 25 [2021-11-23 02:13:50,473 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 02:13:50,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:13:50,474 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:50,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:13:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 02:13:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 02:13:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2021-11-23 02:13:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-11-23 02:13:50,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 11 [2021-11-23 02:13:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:50,481 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-11-23 02:13:50,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2021-11-23 02:13:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-11-23 02:13:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:13:50,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:50,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:50,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:13:50,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:50,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash 778311555, now seen corresponding path program 1 times [2021-11-23 02:13:50,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:50,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561425517] [2021-11-23 02:13:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:50,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:50,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:50,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561425517] [2021-11-23 02:13:50,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561425517] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:50,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623864970] [2021-11-23 02:13:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:50,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:50,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:50,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:13:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:50,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:13:50,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:50,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:50,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623864970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:13:50,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39545284] [2021-11-23 02:13:50,952 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:13:50,952 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:13:50,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:13:50,953 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:13:50,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:13:50,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:50,988 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:13:50,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:13:51,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,018 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:13:51,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:13:51,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,082 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:13:51,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 02:13:51,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 02:13:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:13:51,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:13:51,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2021-11-23 02:13:51,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 02:13:51,361 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-23 02:13:51,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 286 treesize of output 295 [2021-11-23 02:13:51,458 INFO L354 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2021-11-23 02:13:51,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 292 treesize of output 308 [2021-11-23 02:13:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,946 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 02:13:51,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 500 treesize of output 486 [2021-11-23 02:13:51,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:51,978 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:13:51,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 485 treesize of output 470 [2021-11-23 02:13:52,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:52,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 466 treesize of output 457 [2021-11-23 02:13:52,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:52,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:52,158 INFO L354 Elim1Store]: treesize reduction 187, result has 17.6 percent of original size [2021-11-23 02:13:52,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 451 treesize of output 454 [2021-11-23 02:13:52,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,195 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:52,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 509 treesize of output 500 [2021-11-23 02:13:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:52,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:52,321 INFO L354 Elim1Store]: treesize reduction 247, result has 13.9 percent of original size [2021-11-23 02:13:52,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 494 treesize of output 497 [2021-11-23 02:13:52,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:52,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 29 [2021-11-23 02:13:52,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 47 [2021-11-23 02:13:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-23 02:13:52,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:52,780 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 02:13:52,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 29 [2021-11-23 02:13:52,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 65 [2021-11-23 02:13:52,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:13:52,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:13:52,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,094 INFO L354 Elim1Store]: treesize reduction 92, result has 24.6 percent of original size [2021-11-23 02:13:53,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 233 [2021-11-23 02:13:53,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,183 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-23 02:13:53,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 275 treesize of output 264 [2021-11-23 02:13:53,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 281 [2021-11-23 02:13:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,347 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 57 treesize of output 11 [2021-11-23 02:13:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-23 02:13:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-23 02:13:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:53,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 44 [2021-11-23 02:13:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:53,567 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:13:53,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 44 [2021-11-23 02:13:53,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 31 [2021-11-23 02:13:53,647 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:53,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:13:53,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:13:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:13:53,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:53,882 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:13:53,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 02:13:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:53,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:53,937 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:13:53,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 02:13:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,362 INFO L354 Elim1Store]: treesize reduction 72, result has 49.7 percent of original size [2021-11-23 02:13:54,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 405 treesize of output 409 [2021-11-23 02:13:54,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,512 INFO L354 Elim1Store]: treesize reduction 70, result has 32.0 percent of original size [2021-11-23 02:13:54,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 327 treesize of output 295 [2021-11-23 02:13:54,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 342 [2021-11-23 02:13:54,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2021-11-23 02:13:54,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:13:54,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:54,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 22 [2021-11-23 02:13:54,879 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:54,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:54,958 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:54,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 22 [2021-11-23 02:13:55,040 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:55,087 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:55,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:55,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 434 treesize of output 298 [2021-11-23 02:13:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,261 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:55,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 61 [2021-11-23 02:13:55,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:55,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 155 [2021-11-23 02:13:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,324 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:55,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 65 [2021-11-23 02:13:55,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,509 INFO L354 Elim1Store]: treesize reduction 214, result has 34.0 percent of original size [2021-11-23 02:13:55,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 706 treesize of output 635 [2021-11-23 02:13:55,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 78 [2021-11-23 02:13:55,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:55,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 70 [2021-11-23 02:13:56,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 36 [2021-11-23 02:13:56,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 43 [2021-11-23 02:13:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:56,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 57 [2021-11-23 02:13:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:56,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 91 [2021-11-23 02:13:56,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:56,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 110 [2021-11-23 02:13:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,168 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:13:56,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 352 treesize of output 216 [2021-11-23 02:13:56,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:56,330 INFO L354 Elim1Store]: treesize reduction 162, result has 32.5 percent of original size [2021-11-23 02:13:56,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 706 treesize of output 541 [2021-11-23 02:13:57,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:57,965 INFO L354 Elim1Store]: treesize reduction 227, result has 28.2 percent of original size [2021-11-23 02:13:57,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 340 treesize of output 340 [2021-11-23 02:13:58,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:58,267 INFO L354 Elim1Store]: treesize reduction 255, result has 19.3 percent of original size [2021-11-23 02:13:58,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 340 treesize of output 312 [2021-11-23 02:13:58,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:58,528 INFO L354 Elim1Store]: treesize reduction 68, result has 27.7 percent of original size [2021-11-23 02:13:58,529 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 1 case distinctions, treesize of input 299 treesize of output 290 [2021-11-23 02:13:58,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:13:58,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:58,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:58,801 INFO L354 Elim1Store]: treesize reduction 37, result has 35.1 percent of original size [2021-11-23 02:13:58,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 32 [2021-11-23 02:13:58,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:58,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:58,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:59,052 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:13:59,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 14 [2021-11-23 02:13:59,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:13:59,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,322 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-23 02:13:59,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:13:59,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:13:59,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,611 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:13:59,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:13:59,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,739 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:59,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-23 02:13:59,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,880 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:13:59,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 27 [2021-11-23 02:13:59,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,914 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:13:59,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 27 [2021-11-23 02:13:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:59,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-23 02:13:59,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:59,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-23 02:14:00,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 02:14:00,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,174 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:14:00,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 02:14:00,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:14:00,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,304 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-23 02:14:00,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 02:14:00,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,369 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:14:00,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 02:14:00,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 02:14:00,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 02:14:00,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,686 INFO L354 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2021-11-23 02:14:00,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 02:14:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2021-11-23 02:14:00,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,885 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-23 02:14:00,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:14:00,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 7 [2021-11-23 02:14:00,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,041 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,059 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,144 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,225 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,251 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:01,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:02,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:14:02,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:14:02,691 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:09,517 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '319#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (not (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~mid_index~0#1|)) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (or (and (or (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)))) (and (not (= |ULTIMATE.start_dll_insert_~last~0#1.base| 0)) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (or (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|))) (= |ULTIMATE.start_dll_insert_~last~0#1.base| 0)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 4)) (= |ULTIMATE.start_dll_insert_~last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (or (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (or (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)))) (and (= (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (or (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 4)) (= |ULTIMATE.start_dll_insert_~last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.base| 0))) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|))) (or (not (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0)) (not (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0)))) (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (or (and (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 8))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 0)) (and (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0))) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|) (= |#NULL.base| 0))' at error location [2021-11-23 02:14:09,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:14:09,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:14:09,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2021-11-23 02:14:09,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771406156] [2021-11-23 02:14:09,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:14:09,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:14:09,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:14:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:14:09,521 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:09,735 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2021-11-23 02:14:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:14:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 02:14:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:09,738 INFO L225 Difference]: With dead ends: 32 [2021-11-23 02:14:09,739 INFO L226 Difference]: Without dead ends: 20 [2021-11-23 02:14:09,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:14:09,740 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:09,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:14:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-23 02:14:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-23 02:14:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-11-23 02:14:09,749 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2021-11-23 02:14:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:09,749 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-11-23 02:14:09,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-11-23 02:14:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:14:09,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:09,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:09,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:09,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:09,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1524114648, now seen corresponding path program 2 times [2021-11-23 02:14:09,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769330927] [2021-11-23 02:14:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:09,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:11,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:11,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769330927] [2021-11-23 02:14:11,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769330927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:11,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260580601] [2021-11-23 02:14:11,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:14:11,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:11,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:11,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:14:12,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 02:14:12,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:14:12,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-23 02:14:12,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:12,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:14:12,525 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:14:12,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:14:12,719 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:14:12,719 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 1 case distinctions, treesize of input 131 treesize of output 119 [2021-11-23 02:14:12,741 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:14:12,742 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 1 case distinctions, treesize of input 119 treesize of output 107 [2021-11-23 02:14:12,751 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 136 treesize of output 125 [2021-11-23 02:14:12,772 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:14:12,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 93 [2021-11-23 02:14:12,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:12,968 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-23 02:14:12,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 02:14:13,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,311 INFO L354 Elim1Store]: treesize reduction 56, result has 28.2 percent of original size [2021-11-23 02:14:13,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 178 [2021-11-23 02:14:13,324 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 224 treesize of output 212 [2021-11-23 02:14:13,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 197 [2021-11-23 02:14:13,355 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-23 02:14:13,356 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 194 treesize of output 193 [2021-11-23 02:14:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,410 INFO L354 Elim1Store]: treesize reduction 116, result has 24.7 percent of original size [2021-11-23 02:14:13,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 183 treesize of output 188 [2021-11-23 02:14:15,321 INFO L354 Elim1Store]: treesize reduction 999, result has 8.1 percent of original size [2021-11-23 02:14:15,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 37 case distinctions, treesize of input 838 treesize of output 466 [2021-11-23 02:14:15,678 INFO L354 Elim1Store]: treesize reduction 2128, result has 7.0 percent of original size [2021-11-23 02:14:15,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 1112 treesize of output 871 [2021-11-23 02:14:15,734 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 844 treesize of output 790 [2021-11-23 02:14:15,763 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 0 case distinctions, treesize of input 787 treesize of output 767 [2021-11-23 02:14:15,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 25 [2021-11-23 02:14:15,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 51 [2021-11-23 02:14:15,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:15,916 INFO L354 Elim1Store]: treesize reduction 33, result has 29.8 percent of original size [2021-11-23 02:14:15,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 369 treesize of output 144 [2021-11-23 02:14:15,995 INFO L354 Elim1Store]: treesize reduction 104, result has 11.1 percent of original size [2021-11-23 02:14:15,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 335 treesize of output 126 [2021-11-23 02:14:16,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:16,123 INFO L354 Elim1Store]: treesize reduction 100, result has 1.0 percent of original size [2021-11-23 02:14:16,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 82 treesize of output 53 [2021-11-23 02:14:16,172 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 [2021-11-23 02:14:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:16,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:16,373 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-23 02:14:16,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2117727060] [2021-11-23 02:14:16,377 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:14:16,377 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:16,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:16,378 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:16,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:14:16,396 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3c2e364c at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) 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.applyComplexEliminationRules(ElimStorePlain.java:388) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$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:119) 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:610) 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) [2021-11-23 02:14:16,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:14:16,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-23 02:14:16,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820417500] [2021-11-23 02:14:16,400 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:14:16,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:14:16,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:14:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:14:16,402 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:14:16,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:14:16,403 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:16,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:14:16,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:16,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:16,607 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@3c2e364c at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$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:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) 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) [2021-11-23 02:14:16,611 INFO L158 Benchmark]: Toolchain (without parser) took 34804.20ms. Allocated memory was 94.4MB in the beginning and 237.0MB in the end (delta: 142.6MB). Free memory was 55.8MB in the beginning and 159.4MB in the end (delta: -103.6MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2021-11-23 02:14:16,611 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:14:16,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.59ms. Allocated memory is still 94.4MB. Free memory was 55.6MB in the beginning and 62.1MB in the end (delta: -6.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:14:16,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.77ms. Allocated memory is still 94.4MB. Free memory was 62.1MB in the beginning and 59.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:14:16,612 INFO L158 Benchmark]: Boogie Preprocessor took 46.43ms. Allocated memory is still 94.4MB. Free memory was 59.7MB in the beginning and 57.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:14:16,612 INFO L158 Benchmark]: RCFGBuilder took 693.37ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 57.7MB in the beginning and 83.2MB in the end (delta: -25.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-23 02:14:16,613 INFO L158 Benchmark]: TraceAbstraction took 33372.84ms. Allocated memory was 113.2MB in the beginning and 237.0MB in the end (delta: 123.7MB). Free memory was 82.9MB in the beginning and 159.4MB in the end (delta: -76.5MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2021-11-23 02:14:16,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.59ms. Allocated memory is still 94.4MB. Free memory was 55.6MB in the beginning and 62.1MB in the end (delta: -6.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.77ms. Allocated memory is still 94.4MB. Free memory was 62.1MB in the beginning and 59.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.43ms. Allocated memory is still 94.4MB. Free memory was 59.7MB in the beginning and 57.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 693.37ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 57.7MB in the beginning and 83.2MB in the end (delta: -25.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 33372.84ms. Allocated memory was 113.2MB in the beginning and 237.0MB in the end (delta: 123.7MB). Free memory was 82.9MB in the beginning and 159.4MB in the end (delta: -76.5MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3c2e364c de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@3c2e364c: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 02:14:16,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/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_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V --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 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:14:19,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:14:19,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:14:19,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:14:19,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:14:19,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:14:19,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:14:19,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:14:19,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:14:19,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:14:19,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:14:19,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:14:19,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:14:19,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:14:19,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:14:19,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:14:19,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:14:19,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:14:19,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:14:19,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:14:19,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:14:19,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:14:19,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:14:19,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:14:19,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:14:19,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:14:19,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:14:19,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:14:19,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:14:19,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:14:19,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:14:19,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:14:19,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:14:19,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:14:19,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:14:19,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:14:19,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:14:19,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:14:19,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:14:19,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:14:19,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:14:19,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:14:19,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:14:19,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:14:19,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:14:19,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:14:19,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:14:19,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:14:19,265 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:14:19,266 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:14:19,266 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:14:19,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:14:19,267 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:14:19,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:14:19,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:14:19,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:14:19,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:14:19,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:14:19,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:14:19,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:14:19,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:14:19,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:14:19,271 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:14:19,272 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:14:19,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:14:19,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:14:19,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:14:19,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:14:19,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:14:19,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:14:19,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:14:19,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:19,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:14:19,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:14:19,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:14:19,276 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:14:19,276 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:14:19,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:14:19,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:14:19,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:14:19,277 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_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2021-11-23 02:14:19,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:14:19,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:14:19,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:14:19,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:14:19,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:14:19,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-23 02:14:19,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/bc3ab48ef/5f36482e150743cc9530bf274fddf857/FLAGe66c334b7 [2021-11-23 02:14:20,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:14:20,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2021-11-23 02:14:20,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/bc3ab48ef/5f36482e150743cc9530bf274fddf857/FLAGe66c334b7 [2021-11-23 02:14:20,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/data/bc3ab48ef/5f36482e150743cc9530bf274fddf857 [2021-11-23 02:14:20,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:14:20,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:14:20,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:20,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:14:20,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:14:20,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:20" (1/1) ... [2021-11-23 02:14:20,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cc1475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:20, skipping insertion in model container [2021-11-23 02:14:20,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:20" (1/1) ... [2021-11-23 02:14:20,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:14:20,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:14:21,277 WARN L230 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_d5e29ab9-9042-40f0-9995-760781cdecdc/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-23 02:14:21,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:21,301 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:14:21,349 WARN L230 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_d5e29ab9-9042-40f0-9995-760781cdecdc/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2021-11-23 02:14:21,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:21,392 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:14:21,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21 WrapperNode [2021-11-23 02:14:21,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:21,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:21,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:14:21,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:14:21,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,454 INFO L137 Inliner]: procedures = 130, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2021-11-23 02:14:21,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:21,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:14:21,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:14:21,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:14:21,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:14:21,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:14:21,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:14:21,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:14:21,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (1/1) ... [2021-11-23 02:14:21,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:21,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:21,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:14:21,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:14:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 02:14:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 02:14:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:14:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:14:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:14:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:14:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:14:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:14:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:14:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:14:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:14:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:14:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:14:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:14:21,798 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:14:21,812 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:14:21,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-23 02:14:22,330 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:14:22,336 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:14:22,336 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 02:14:22,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:22 BoogieIcfgContainer [2021-11-23 02:14:22,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:14:22,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:14:22,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:14:22,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:14:22,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:20" (1/3) ... [2021-11-23 02:14:22,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3369e9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:22, skipping insertion in model container [2021-11-23 02:14:22,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:21" (2/3) ... [2021-11-23 02:14:22,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3369e9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:22, skipping insertion in model container [2021-11-23 02:14:22,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:22" (3/3) ... [2021-11-23 02:14:22,354 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2021-11-23 02:14:22,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:14:22,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:14:22,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:14:22,410 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 [2021-11-23 02:14:22,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:14:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 32 states have (on average 1.65625) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:14:22,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:22,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:22,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:22,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash -504255867, now seen corresponding path program 1 times [2021-11-23 02:14:22,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:14:22,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427592732] [2021-11-23 02:14:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:22,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:14:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:14:22,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:14:22,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:14:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:14:22,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:22,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:22,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:14:22,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427592732] [2021-11-23 02:14:22,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427592732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:22,750 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:22,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:14:22,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430261688] [2021-11-23 02:14:22,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:22,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:14:22,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:14:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:14:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:22,813 INFO L87 Difference]: Start difference. First operand has 36 states, 32 states have (on average 1.65625) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:22,841 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2021-11-23 02:14:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:14:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 02:14:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:22,851 INFO L225 Difference]: With dead ends: 64 [2021-11-23 02:14:22,851 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 02:14:22,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:22,860 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:22,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:14:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 02:14:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 02:14:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-23 02:14:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-23 02:14:22,906 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15 [2021-11-23 02:14:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:22,907 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-23 02:14:22,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-23 02:14:22,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:14:22,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:22,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:22,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:23,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:14:23,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 775433970, now seen corresponding path program 1 times [2021-11-23 02:14:23,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:14:23,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383467476] [2021-11-23 02:14:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:23,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:14:23,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:14:23,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:14:23,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:14:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:23,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:14:23,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:23,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:23,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:14:23,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383467476] [2021-11-23 02:14:23,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383467476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:23,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:23,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:14:23,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344059925] [2021-11-23 02:14:23,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:23,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:14:23,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:14:23,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:14:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:14:23,355 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-11-23 02:14:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:23,382 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-11-23 02:14:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:14:23,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 15 [2021-11-23 02:14:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:23,384 INFO L225 Difference]: With dead ends: 53 [2021-11-23 02:14:23,384 INFO L226 Difference]: Without dead ends: 33 [2021-11-23 02:14:23,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:14:23,386 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:23,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 97 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:14:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-23 02:14:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-23 02:14:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.375) internal successors, (44), 32 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) [2021-11-23 02:14:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-11-23 02:14:23,394 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 15 [2021-11-23 02:14:23,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:23,395 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-11-23 02:14:23,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-11-23 02:14:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2021-11-23 02:14:23,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 02:14:23,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:23,397 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:23,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:23,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:14:23,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:23,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1054331662, now seen corresponding path program 1 times [2021-11-23 02:14:23,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:14:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723458162] [2021-11-23 02:14:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:23,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:14:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:14:23,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:14:23,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:14:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:23,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:14:23,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:23,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:23,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:14:23,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723458162] [2021-11-23 02:14:23,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723458162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:23,907 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:23,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:14:23,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381333739] [2021-11-23 02:14:23,907 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:23,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:23,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:14:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:23,909 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:24,033 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-23 02:14:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 02:14:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:24,036 INFO L225 Difference]: With dead ends: 61 [2021-11-23 02:14:24,036 INFO L226 Difference]: Without dead ends: 34 [2021-11-23 02:14:24,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:24,038 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:24,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-23 02:14:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-11-23 02:14:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 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) [2021-11-23 02:14:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-11-23 02:14:24,045 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 25 [2021-11-23 02:14:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:24,046 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-11-23 02:14:24,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-11-23 02:14:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 02:14:24,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:24,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:24,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 02:14:24,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:14:24,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1871980112, now seen corresponding path program 1 times [2021-11-23 02:14:24,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:14:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037029669] [2021-11-23 02:14:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:24,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:14:24,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:14:24,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:14:24,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:14:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:24,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:14:24,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 02:14:24,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 02:14:25,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:14:25,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037029669] [2021-11-23 02:14:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037029669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:25,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:25,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:14:25,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147294104] [2021-11-23 02:14:25,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:14:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:14:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:14:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:14:25,239 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:25,296 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2021-11-23 02:14:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:14:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 02:14:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:25,298 INFO L225 Difference]: With dead ends: 48 [2021-11-23 02:14:25,298 INFO L226 Difference]: Without dead ends: 34 [2021-11-23 02:14:25,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:14:25,300 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:25,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:14:25,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-23 02:14:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-23 02:14:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) [2021-11-23 02:14:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-11-23 02:14:25,318 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 25 [2021-11-23 02:14:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:25,322 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-11-23 02:14:25,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:14:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-11-23 02:14:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:14:25,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:25,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:25,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:25,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:14:25,543 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1615339204, now seen corresponding path program 1 times [2021-11-23 02:14:25,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:14:25,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461903776] [2021-11-23 02:14:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:25,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:14:25,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:14:25,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:14:25,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:14:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:25,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-23 02:14:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:25,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:14:25,974 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:14:25,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-23 02:14:26,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:26,434 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:14:26,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 56 [2021-11-23 02:14:26,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:26,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-23 02:14:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:26,876 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 42 treesize of output 27 [2021-11-23 02:14:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:26,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 02:14:27,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:27,198 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:14:27,198 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 2 case distinctions, treesize of input 149 treesize of output 100 [2021-11-23 02:14:27,239 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-23 02:14:27,240 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 139 treesize of output 105 [2021-11-23 02:14:27,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 92 [2021-11-23 02:14:28,403 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-23 02:14:28,404 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 [2021-11-23 02:14:29,234 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-23 02:14:29,234 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 200 treesize of output 207 [2021-11-23 02:14:29,704 INFO L354 Elim1Store]: treesize reduction 592, result has 7.6 percent of original size [2021-11-23 02:14:29,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 179 treesize of output 134 [2021-11-23 02:14:29,945 INFO L354 Elim1Store]: treesize reduction 434, result has 9.0 percent of original size [2021-11-23 02:14:29,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 172 treesize of output 171 [2021-11-23 02:14:38,881 WARN L227 SmtUtils]: Spent 7.47s on a formula simplification. DAG size of input: 234 DAG size of output: 49 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:14:38,882 INFO L354 Elim1Store]: treesize reduction 1126, result has 6.6 percent of original size [2021-11-23 02:14:38,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 391 treesize of output 290 [2021-11-23 02:14:42,921 INFO L354 Elim1Store]: treesize reduction 662, result has 8.9 percent of original size [2021-11-23 02:14:42,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 319 treesize of output 301 [2021-11-23 02:14:43,052 INFO L354 Elim1Store]: treesize reduction 164, result has 15.9 percent of original size [2021-11-23 02:14:43,053 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 315 treesize of output 270 [2021-11-23 02:14:43,114 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-23 02:14:43,115 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 248 treesize of output 232 [2021-11-23 02:14:45,524 INFO L354 Elim1Store]: treesize reduction 342, result has 13.9 percent of original size [2021-11-23 02:14:45,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 469 treesize of output 219 [2021-11-23 02:14:47,110 INFO L354 Elim1Store]: treesize reduction 490, result has 13.7 percent of original size [2021-11-23 02:14:47,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 397 treesize of output 334 [2021-11-23 02:14:47,172 INFO L354 Elim1Store]: treesize reduction 83, result has 11.7 percent of original size [2021-11-23 02:14:47,173 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 454 treesize of output 400 [2021-11-23 02:14:48,292 INFO L354 Elim1Store]: treesize reduction 164, result has 0.6 percent of original size [2021-11-23 02:14:48,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 349 treesize of output 125 [2021-11-23 02:14:48,335 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-11-23 02:14:48,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 60 [2021-11-23 02:14:48,553 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 [2021-11-23 02:14:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:48,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:01,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_node_create_~data#1| (_ BitVec 32)) (|v_ULTIMATE.start_dll_insert_~last~0#1.offset_18| (_ BitVec 32)) (|ULTIMATE.start_node_create_~temp~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse9 (bvadd (_ bv4 32) |ULTIMATE.start_node_create_~temp~0#1.offset|)) (.cse10 (bvadd (_ bv8 32) |ULTIMATE.start_node_create_~temp~0#1.offset|))) (let ((.cse13 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10))) (.cse18 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11)))) (let ((.cse17 (select (select .cse18 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse7 (select (select .cse13 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (let ((.cse14 (select .cse13 .cse7)) (.cse8 (bvadd (_ bv4 32) .cse17))) (let ((.cse1 (select .cse14 .cse8)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_dll_insert_~last~0#1.offset_18|)) (.cse4 (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 v_DerPreprocessor_9) .cse10 v_DerPreprocessor_8) |ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|)))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 v_DerPreprocessor_7))))) (store .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 v_DerPreprocessor_6) .cse5 v_DerPreprocessor_5))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_4))) (select (select (let ((.cse11 (let ((.cse12 (store .cse13 .cse7 (store .cse14 .cse8 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 .cse7) .cse5 .cse1))))) (store .cse11 .cse1 (store (select .cse11 .cse1) .cse2 |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse15 (let ((.cse16 (store .cse18 .cse7 (store (select .cse18 .cse7) .cse8 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)))) (store .cse16 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse16 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 .cse17) .cse5 |v_ULTIMATE.start_dll_insert_~last~0#1.offset_18|))))) (store .cse15 .cse1 (store (select .cse15 .cse1) .cse2 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))))) is different from false [2021-11-23 02:17:44,105 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 8705636699 treesize of output 8690397303 [2021-11-23 02:27:16,509 WARN L227 SmtUtils]: Spent 9.54m on a formula simplification that was a NOOP. DAG size: 1783 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:27:18,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:27:18,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461903776] [2021-11-23 02:27:18,401 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 02:27:18,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1138576729] [2021-11-23 02:27:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:18,402 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:27:18,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:27:18,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:27:18,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e29ab9-9042-40f0-9995-760781cdecdc/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-23 02:27:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:18,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-23 02:27:18,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:27:19,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:27:23,286 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:27:23,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 02:27:24,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:24,661 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 42 treesize of output 27 [2021-11-23 02:27:24,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:24,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 02:27:24,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:24,714 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 18 treesize of output 19 [2021-11-23 02:27:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:26,214 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:27:26,214 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 2 case distinctions, treesize of input 115 treesize of output 78 [2021-11-23 02:27:26,253 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-23 02:27:26,254 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 105 treesize of output 71 [2021-11-23 02:27:30,104 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-23 02:27:30,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 42 [2021-11-23 02:27:32,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:32,592 INFO L354 Elim1Store]: treesize reduction 213, result has 12.7 percent of original size [2021-11-23 02:27:32,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 129 [2021-11-23 02:27:32,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 147 [2021-11-23 02:27:32,609 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 144 treesize of output 132 [2021-11-23 02:27:32,647 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-23 02:27:32,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 128 [2021-11-23 02:27:32,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:32,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:27:32,761 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:27:32,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-23 02:27:42,086 INFO L354 Elim1Store]: treesize reduction 962, result has 7.6 percent of original size [2021-11-23 02:27:42,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 382 treesize of output 289 [2021-11-23 02:27:42,700 INFO L354 Elim1Store]: treesize reduction 473, result has 9.9 percent of original size [2021-11-23 02:27:42,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 352 treesize of output 303 [2021-11-23 02:27:42,803 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-11-23 02:27:42,803 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 325 treesize of output 274 [2021-11-23 02:27:42,844 INFO L354 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2021-11-23 02:27:42,844 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 250 treesize of output 234