./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta --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 b335af75f55d322161e6a270bf4669ab290ae0e9da4bc480724c7d5e3b79fdab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:45,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:45,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:45,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:45,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:45,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:45,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:45,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:45,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:45,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:45,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:45,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:45,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:45,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:45,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:45,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:45,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:45,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:45,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:45,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:45,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:45,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:45,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:45,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:45,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:45,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:45,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:45,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:45,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:45,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:45,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:45,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:45,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:45,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:45,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:45,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:45,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:45,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:45,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:45,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:45,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:45,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:23:45,595 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:45,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:45,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:45,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:45,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:45,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:45,600 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:45,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:45,601 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:45,601 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:45,602 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:45,602 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:45,603 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:45,603 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:45,603 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:45,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:45,604 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:45,604 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:45,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:45,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:45,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:45,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:45,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:45,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:45,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:45,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:45,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:45,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:45,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:45,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:45,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:45,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:45,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:45,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:45,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:45,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:45,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:45,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:45,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:45,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:45,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:45,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b335af75f55d322161e6a270bf4669ab290ae0e9da4bc480724c7d5e3b79fdab [2022-10-17 17:23:45,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:45,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:45,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:45,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:45,930 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:45,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/list-simple/sll2c_append_equal.i [2022-10-17 17:23:46,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/data/35241aa4f/68373598a55f4e209ef40c6a0343d157/FLAGa793ef2a7 [2022-10-17 17:23:46,642 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:46,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/sv-benchmarks/c/list-simple/sll2c_append_equal.i [2022-10-17 17:23:46,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/data/35241aa4f/68373598a55f4e209ef40c6a0343d157/FLAGa793ef2a7 [2022-10-17 17:23:46,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/data/35241aa4f/68373598a55f4e209ef40c6a0343d157 [2022-10-17 17:23:46,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:46,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:46,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:46,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:46,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:46,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:46" (1/1) ... [2022-10-17 17:23:46,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d28d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:46, skipping insertion in model container [2022-10-17 17:23:46,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:46" (1/1) ... [2022-10-17 17:23:46,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:47,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:47,455 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_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/sv-benchmarks/c/list-simple/sll2c_append_equal.i[24433,24446] [2022-10-17 17:23:47,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:47,480 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:47,542 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_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/sv-benchmarks/c/list-simple/sll2c_append_equal.i[24433,24446] [2022-10-17 17:23:47,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:47,575 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:47,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47 WrapperNode [2022-10-17 17:23:47,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:47,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:47,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:47,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:47,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,630 INFO L138 Inliner]: procedures = 127, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 136 [2022-10-17 17:23:47,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:47,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:47,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:47,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:47,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:47,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:47,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:47,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:47,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (1/1) ... [2022-10-17 17:23:47,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:47,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:47,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:47,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:23:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:23:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-10-17 17:23:47,817 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-10-17 17:23:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:23:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:23:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:23:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:23:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:23:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:47,931 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:47,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:48,302 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:48,338 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:48,339 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 17:23:48,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:48 BoogieIcfgContainer [2022-10-17 17:23:48,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:48,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:48,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:48,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:48,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:46" (1/3) ... [2022-10-17 17:23:48,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d916ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:48, skipping insertion in model container [2022-10-17 17:23:48,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:47" (2/3) ... [2022-10-17 17:23:48,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d916ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:48, skipping insertion in model container [2022-10-17 17:23:48,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:48" (3/3) ... [2022-10-17 17:23:48,353 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_append_equal.i [2022-10-17 17:23:48,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:48,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:48,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:48,473 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@166a116, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:48,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:23:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:23:48,489 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:48,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:48,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1098954130, now seen corresponding path program 1 times [2022-10-17 17:23:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:48,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491498523] [2022-10-17 17:23:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:23:49,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491498523] [2022-10-17 17:23:49,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491498523] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:49,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:49,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:49,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807121426] [2022-10-17 17:23:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:49,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:49,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:49,049 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:23:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:49,104 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2022-10-17 17:23:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:49,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-10-17 17:23:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:49,114 INFO L225 Difference]: With dead ends: 53 [2022-10-17 17:23:49,114 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 17:23:49,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:49,121 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:49,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:23:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 17:23:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-10-17 17:23:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:23:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-10-17 17:23:49,162 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 17 [2022-10-17 17:23:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:49,162 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-10-17 17:23:49,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:23:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-10-17 17:23:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 17:23:49,164 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:49,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:49,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:49,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1272861567, now seen corresponding path program 1 times [2022-10-17 17:23:49,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:49,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053899240] [2022-10-17 17:23:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:23:50,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:50,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053899240] [2022-10-17 17:23:50,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053899240] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:50,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497648456] [2022-10-17 17:23:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:50,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:50,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:50,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:50,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:23:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:50,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-17 17:23:50,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:50,532 INFO L390 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 8 treesize of output 4 [2022-10-17 17:23:50,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:50,659 INFO L390 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 15 treesize of output 17 [2022-10-17 17:23:50,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-10-17 17:23:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:23:50,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:50,802 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_12| Int) (v_ArrVal_184 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_12| v_ArrVal_184) |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) 0)) (not (< |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_12| |c_#StackHeapBarrier|)))) is different from false [2022-10-17 17:23:50,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497648456] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1683745514] [2022-10-17 17:23:50,841 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-10-17 17:23:50,841 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:23:50,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:23:50,852 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:23:50,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:23:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:50,929 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:50,930 INFO L390 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 [2022-10-17 17:23:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:50,967 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:23:50,968 INFO L390 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 [2022-10-17 17:23:51,049 INFO L390 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 [2022-10-17 17:23:51,067 INFO L390 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 [2022-10-17 17:23:51,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,086 INFO L390 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 22 treesize of output 7 [2022-10-17 17:23:51,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,096 INFO L390 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 22 treesize of output 7 [2022-10-17 17:23:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-17 17:23:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-17 17:23:51,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 10 [2022-10-17 17:23:51,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-17 17:23:51,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:51,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 10 [2022-10-17 17:23:51,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:23:51,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:23:51,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:23:51,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-10-17 17:23:51,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:23:51,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:51,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:51,982 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:51,988 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:51,992 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:52,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:23:52,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:23:52,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:23:52,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:23:52,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:23:52,573 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:52,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:52,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:52,582 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:52,584 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:52,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-10-17 17:23:52,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:23:52,705 INFO L390 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 19 treesize of output 11 [2022-10-17 17:23:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:52,981 INFO L390 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 140 treesize of output 124 [2022-10-17 17:23:52,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:52,998 INFO L390 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 0 case distinctions, treesize of input 136 treesize of output 124 [2022-10-17 17:23:53,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:53,015 INFO L390 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 0 case distinctions, treesize of input 128 treesize of output 116 [2022-10-17 17:23:53,292 INFO L390 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 [2022-10-17 17:23:53,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:23:53,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:23:53,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:53,464 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:23:53,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:53,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:53,492 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:23:53,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:53,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:53,672 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:23:53,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:53,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:53,694 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:23:53,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:53,892 INFO L390 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 186 treesize of output 168 [2022-10-17 17:23:53,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:53,921 INFO L390 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 186 treesize of output 168 [2022-10-17 17:23:53,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:53,965 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-10-17 17:23:53,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 205 treesize of output 180 [2022-10-17 17:23:54,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:54,024 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-10-17 17:23:54,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 197 treesize of output 172 [2022-10-17 17:23:54,298 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-10-17 17:23:54,313 INFO L390 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 [2022-10-17 17:23:54,325 INFO L390 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 [2022-10-17 17:23:54,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:54,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-17 17:23:54,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:54,363 INFO L390 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 22 treesize of output 7 [2022-10-17 17:23:54,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:54,375 INFO L390 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 22 treesize of output 7 [2022-10-17 17:23:54,381 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:23:58,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1683745514] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:58,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:23:58,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13, 13] total 34 [2022-10-17 17:23:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225334241] [2022-10-17 17:23:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 17:23:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 17:23:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1076, Unknown=1, NotChecked=66, Total=1260 [2022-10-17 17:23:58,341 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:23:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:58,771 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-10-17 17:23:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 17:23:58,772 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2022-10-17 17:23:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:58,773 INFO L225 Difference]: With dead ends: 34 [2022-10-17 17:23:58,773 INFO L226 Difference]: Without dead ends: 32 [2022-10-17 17:23:58,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=117, Invalid=1076, Unknown=1, NotChecked=66, Total=1260 [2022-10-17 17:23:58,775 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:58,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 60 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:23:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-17 17:23:58,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-10-17 17:23:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:23:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-10-17 17:23:58,788 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 23 [2022-10-17 17:23:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:58,789 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-10-17 17:23:58,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:23:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-10-17 17:23:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 17:23:58,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:58,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:58,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 17:23:59,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:59,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash -843775883, now seen corresponding path program 1 times [2022-10-17 17:23:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:59,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456131604] [2022-10-17 17:23:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:23:59,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:59,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456131604] [2022-10-17 17:23:59,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456131604] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185124031] [2022-10-17 17:23:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:59,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:59,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:59,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:23:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:59,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-17 17:23:59,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:59,822 INFO L390 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 8 treesize of output 4 [2022-10-17 17:23:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:59,886 INFO L390 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 15 treesize of output 17 [2022-10-17 17:23:59,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-10-17 17:23:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:23:59,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:24:00,008 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_16| Int) (v_ArrVal_320 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_16| v_ArrVal_320) |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) 0)) (not (< |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_16| |c_#StackHeapBarrier|)))) is different from false [2022-10-17 17:24:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185124031] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:24:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1182587068] [2022-10-17 17:24:00,014 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-10-17 17:24:00,014 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:24:00,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:24:00,015 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:24:00,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:24:00,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,059 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:24:00,060 INFO L390 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 [2022-10-17 17:24:00,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,071 INFO L390 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 [2022-10-17 17:24:00,104 INFO L390 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 [2022-10-17 17:24:00,109 INFO L390 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 [2022-10-17 17:24:00,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,119 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:00,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-17 17:24:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,136 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:00,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-17 17:24:00,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 10 [2022-10-17 17:24:00,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-17 17:24:00,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 10 [2022-10-17 17:24:00,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:00,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:00,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:00,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:00,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:00,584 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,590 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,592 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-10-17 17:24:00,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:00,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:00,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:00,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:00,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,850 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,859 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:00,907 INFO L390 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 19 treesize of output 11 [2022-10-17 17:24:00,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:00,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-10-17 17:24:00,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:24:01,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:01,108 INFO L390 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 140 treesize of output 124 [2022-10-17 17:24:01,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,119 INFO L390 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 0 case distinctions, treesize of input 136 treesize of output 124 [2022-10-17 17:24:01,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,132 INFO L390 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 0 case distinctions, treesize of input 132 treesize of output 120 [2022-10-17 17:24:01,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:24:01,366 INFO L390 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 [2022-10-17 17:24:01,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:24:01,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,493 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:01,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:24:01,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,512 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:01,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:24:01,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,633 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:01,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:24:01,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,652 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:01,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:24:01,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:01,799 INFO L390 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 182 treesize of output 166 [2022-10-17 17:24:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:01,819 INFO L390 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 182 treesize of output 166 [2022-10-17 17:24:01,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,852 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-10-17 17:24:01,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 201 treesize of output 176 [2022-10-17 17:24:01,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:01,883 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-10-17 17:24:01,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 193 treesize of output 168 [2022-10-17 17:24:02,183 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-10-17 17:24:02,193 INFO L390 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 [2022-10-17 17:24:02,199 INFO L390 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 [2022-10-17 17:24:02,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:02,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-17 17:24:02,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:02,228 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:02,238 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:02,240 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:24:06,516 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '467#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~count~0#1| 1) (= |ULTIMATE.start_sll_circular_append_~head#1.base| |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_#res#1.base|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= |ULTIMATE.start_sll_circular_append_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (not (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 1) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) (= |ULTIMATE.start_sll_circular_append_#in~data#1| |ULTIMATE.start_sll_circular_append_~data#1|) (<= 0 |#NULL.offset|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 4)) |ULTIMATE.start_main_~data~0#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (= |ULTIMATE.start_sll_circular_append_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= 8 (select |#length| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (< |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:24:06,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:24:06,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:24:06,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2022-10-17 17:24:06,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969213663] [2022-10-17 17:24:06,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 17:24:06,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-17 17:24:06,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:24:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 17:24:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1205, Unknown=1, NotChecked=70, Total=1406 [2022-10-17 17:24:06,519 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 17:24:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:24:06,736 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-10-17 17:24:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:24:06,736 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2022-10-17 17:24:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:24:06,738 INFO L225 Difference]: With dead ends: 33 [2022-10-17 17:24:06,738 INFO L226 Difference]: Without dead ends: 24 [2022-10-17 17:24:06,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=163, Invalid=1562, Unknown=1, NotChecked=80, Total=1806 [2022-10-17 17:24:06,741 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:24:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 166 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-10-17 17:24:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-17 17:24:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-10-17 17:24:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:24:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-10-17 17:24:06,751 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 25 [2022-10-17 17:24:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:24:06,751 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-10-17 17:24:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 17:24:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-10-17 17:24:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 17:24:06,753 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:24:06,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:24:06,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:24:06,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 17:24:06,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:24:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:24:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1512516796, now seen corresponding path program 1 times [2022-10-17 17:24:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:24:06,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804353261] [2022-10-17 17:24:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:24:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:24:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:24:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:24:08,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:24:08,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804353261] [2022-10-17 17:24:08,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804353261] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:24:08,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635848450] [2022-10-17 17:24:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:24:08,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:24:08,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:24:08,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:24:08,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d2a3de7-b839-4249-8e3c-8710aa1b41eb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:24:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:24:08,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 124 conjunts are in the unsatisfiable core [2022-10-17 17:24:08,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:24:08,455 INFO L390 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 [2022-10-17 17:24:08,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-10-17 17:24:08,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:08,557 INFO L390 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 14 [2022-10-17 17:24:08,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:08,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2022-10-17 17:24:08,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:24:08,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:08,827 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:24:08,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-10-17 17:24:08,933 INFO L390 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 19 treesize of output 18 [2022-10-17 17:24:09,031 INFO L390 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 18 treesize of output 20 [2022-10-17 17:24:09,156 INFO L390 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 37 treesize of output 21 [2022-10-17 17:24:09,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,164 INFO L390 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 0 case distinctions, treesize of input 16 treesize of output 10 [2022-10-17 17:24:09,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:09,174 INFO L390 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 7 treesize of output 3 [2022-10-17 17:24:09,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,347 INFO L390 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 14 treesize of output 16 [2022-10-17 17:24:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,363 INFO L390 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 43 treesize of output 39 [2022-10-17 17:24:09,379 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-10-17 17:24:09,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-10-17 17:24:09,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-10-17 17:24:09,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,413 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-10-17 17:24:09,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 25 [2022-10-17 17:24:09,719 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-10-17 17:24:09,719 INFO L390 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 62 [2022-10-17 17:24:09,739 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-10-17 17:24:09,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 89 [2022-10-17 17:24:09,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,761 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2022-10-17 17:24:09,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:09,770 INFO L390 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 36 treesize of output 38 [2022-10-17 17:24:09,777 INFO L390 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 26 treesize of output 28 [2022-10-17 17:24:09,891 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 17:24:09,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 27 [2022-10-17 17:24:09,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-10-17 17:24:09,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:24:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:24:09,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:24:10,088 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_475 Int) (v_ArrVal_480 (Array Int Int)) (v_ArrVal_473 (Array Int Int)) (v_ArrVal_478 (Array Int Int)) (v_ArrVal_477 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| v_ArrVal_475)) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_480) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_477) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_ArrVal_473) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_478) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) is different from false [2022-10-17 17:24:10,118 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_475 Int) (v_ArrVal_480 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| Int) (v_ArrVal_473 (Array Int Int)) (v_ArrVal_478 (Array Int Int)) (v_ArrVal_477 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))) (select (select (store (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| v_ArrVal_475)) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_480) (select (select (store (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_477) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_473) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_478) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (not (<= |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))))) is different from false [2022-10-17 17:24:10,136 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_475 Int) (v_ArrVal_480 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| Int) (v_ArrVal_473 (Array Int Int)) (v_ArrVal_478 (Array Int Int)) (v_ArrVal_477 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))) (select (select (store (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| v_ArrVal_475)) |c_ULTIMATE.start_sll_circular_append_#t~ret9#1.base| v_ArrVal_480) (select (select (store (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| |c_ULTIMATE.start_sll_circular_append_#t~ret9#1.base|)) |c_ULTIMATE.start_sll_circular_append_#t~ret9#1.base| v_ArrVal_477) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_473) |c_ULTIMATE.start_sll_circular_append_#t~ret9#1.base| v_ArrVal_478) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) |c_ULTIMATE.start_main_~data~0#1|))) is different from false [2022-10-17 17:24:10,239 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_475 Int) (v_ArrVal_490 (Array Int Int)) (v_ArrVal_492 (Array Int Int)) (v_ArrVal_491 (Array Int Int)) (v_ArrVal_480 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| Int) (|v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| Int) (v_ArrVal_473 (Array Int Int)) (v_ArrVal_478 (Array Int Int)) (v_ArrVal_477 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| v_ArrVal_492))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse2 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| v_ArrVal_490))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))) (select (select (store (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| v_ArrVal_491))) (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| v_ArrVal_475))) |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| v_ArrVal_480) (select (select (store (store .cse2 .cse1 (store (select .cse2 .cse1) |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20|)) |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| v_ArrVal_477) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store .cse3 .cse1 v_ArrVal_473) |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| v_ArrVal_478) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))))) (not (< |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_20|) 0)) (not (<= |v_ULTIMATE.start_sll_circular_append_~last~1#1.offset_11| (select (select .cse3 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)))))) is different from false [2022-10-17 17:24:10,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635848450] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:24:10,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142200139] [2022-10-17 17:24:10,245 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-10-17 17:24:10,245 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:24:10,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:24:10,246 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:24:10,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:24:10,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,274 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:24:10,274 INFO L390 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 [2022-10-17 17:24:10,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,284 INFO L390 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 [2022-10-17 17:24:10,308 INFO L390 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 [2022-10-17 17:24:10,311 INFO L390 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 [2022-10-17 17:24:10,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,320 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:10,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,325 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:10,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-17 17:24:10,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-17 17:24:10,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 10 [2022-10-17 17:24:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 10 [2022-10-17 17:24:10,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-17 17:24:10,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:10,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:10,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:10,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:10,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:10,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:10,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:10,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:10,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:10,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:10,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:10,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-10-17 17:24:10,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:24:10,688 INFO L390 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 19 treesize of output 11 [2022-10-17 17:24:10,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:10,991 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:10,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:10,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:10,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:11,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:11,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,241 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,245 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,246 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:11,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:11,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:24:11,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:11,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-10-17 17:24:11,354 INFO L390 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 19 treesize of output 11 [2022-10-17 17:24:11,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:11,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:11,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:11,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,859 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:11,865 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:12,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:12,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:12,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:12,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:12,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:12,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:12,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:12,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:12,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:12,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:12,225 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:24:12,226 INFO L390 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 19 treesize of output 18 [2022-10-17 17:24:12,254 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:24:12,254 INFO L390 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 19 treesize of output 18 [2022-10-17 17:24:12,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-10-17 17:24:12,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:12,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,359 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:12,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-10-17 17:24:12,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:12,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:12,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,428 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:12,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-10-17 17:24:12,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:12,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-10-17 17:24:12,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,522 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:12,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-10-17 17:24:12,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,554 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:24:12,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-10-17 17:24:12,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-10-17 17:24:12,758 INFO L356 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2022-10-17 17:24:12,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 34 [2022-10-17 17:24:12,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,851 INFO L356 Elim1Store]: treesize reduction 120, result has 19.5 percent of original size [2022-10-17 17:24:12,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 119 treesize of output 112 [2022-10-17 17:24:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:12,955 INFO L356 Elim1Store]: treesize reduction 95, result has 36.2 percent of original size [2022-10-17 17:24:12,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 119 treesize of output 137 [2022-10-17 17:24:13,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:13,057 INFO L356 Elim1Store]: treesize reduction 24, result has 52.0 percent of original size [2022-10-17 17:24:13,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 45 [2022-10-17 17:24:13,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-10-17 17:24:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:13,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 12 [2022-10-17 17:24:13,159 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:13,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:13,271 INFO L356 Elim1Store]: treesize reduction 24, result has 52.0 percent of original size [2022-10-17 17:24:13,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 53 [2022-10-17 17:24:13,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-10-17 17:24:13,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:13,365 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 17:24:13,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2022-10-17 17:24:13,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:24:13,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-10-17 17:24:13,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:24:14,659 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 8 for LOIs [2022-10-17 17:24:14,666 INFO L390 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 [2022-10-17 17:24:14,670 INFO L390 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 [2022-10-17 17:24:14,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:14,679 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:14,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:14,685 INFO L390 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 22 treesize of output 7 [2022-10-17 17:24:14,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:24:14,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-17 17:24:14,698 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:24:14,718 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse33 (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (let ((.cse3 (not .cse33))) (and (< 0 |c_#StackHeapBarrier|) (<= |c_ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= |c_ULTIMATE.start_sll_circular_append_#in~head#1.offset| |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#s~0#1.base|) (<= |c_ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (let ((.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~head#1.base|))) (let ((.cse17 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (.cse5 (select .cse7 |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)) (.cse10 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|))) (let ((.cse4 (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|))) (.cse0 (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)) (.cse11 (= .cse10 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (.cse12 (= |c_ULTIMATE.start_sll_circular_append_~head#1.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|)) (.cse16 (exists ((v_DerPreprocessor_7 (Array Int Int)) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse32 (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_7) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_8) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_7) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_8))) (let ((.cse30 (select (select .cse32 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)) (.cse31 (select .cse32 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= .cse30 .cse5) (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| .cse30) (= .cse30 (select v_DerPreprocessor_8 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (= (select .cse31 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) (= .cse31 v_DerPreprocessor_7)))))) (.cse2 (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| .cse17)) (.cse9 (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|)))) (or (let ((.cse8 (not .cse12)) (.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~head#1.base|))) (and (or .cse0 (and (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select .cse1 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select .cse1 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|))) .cse2 .cse3) .cse4 (let ((.cse6 (not (= .cse17 0)))) (or (and (or (not (= .cse5 0)) .cse6) (or (and (or (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select .cse7 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) .cse3) (= (select .cse7 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) .cse8) (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| .cse5) .cse9 (= .cse10 .cse5)) (and .cse0 .cse11 .cse12 .cse9 (or (exists ((v_DerPreprocessor_7 (Array Int Int)) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse15 (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_7) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_8) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_7) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_8))) (let ((.cse13 (select (select .cse15 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)) (.cse14 (select .cse15 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= .cse13 .cse5) (not (= .cse13 0)) (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| .cse13) (= .cse13 (select v_DerPreprocessor_8 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (= (select .cse14 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) (= .cse14 v_DerPreprocessor_7))))) (and .cse16 .cse6))))) (or (not .cse0) .cse8) (or (and .cse0 .cse12) (= (select .cse1 |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) .cse17)) (= .cse17 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and .cse4 .cse0 .cse11 .cse12 (or (and (or (exists ((v_DerPreprocessor_10 (Array Int Int))) (let ((.cse18 (select v_DerPreprocessor_10 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|))) (and (= .cse18 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) (exists ((v_DerPreprocessor_9 (Array Int Int))) (let ((.cse20 (store (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10))) (let ((.cse19 (select .cse20 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select .cse19 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (= .cse19 v_DerPreprocessor_9) (= .cse18 (select (select .cse20 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)))))) (not (= .cse18 0))))) (exists ((v_DerPreprocessor_10 (Array Int Int))) (let ((.cse21 (select v_DerPreprocessor_10 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|))) (and (= .cse21 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) (not (= .cse21 0)) (exists ((v_DerPreprocessor_9 (Array Int Int))) (let ((.cse22 (select (store (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select .cse22 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (= .cse22 v_DerPreprocessor_9)))))))) .cse16) (and (exists ((v_prenex_3 (Array Int Int)) (v_prenex_4 (Array Int Int))) (let ((.cse25 (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_prenex_3) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_prenex_4) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_prenex_3) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_prenex_4))) (let ((.cse23 (select (select .cse25 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)) (.cse24 (select .cse25 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= .cse23 .cse5) (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| .cse23) (= .cse24 v_prenex_3) (= .cse23 (select v_prenex_4 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (not (= .cse23 0)) (= (select .cse24 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|))))) (or (exists ((v_DerPreprocessor_10 (Array Int Int))) (let ((.cse26 (select v_DerPreprocessor_10 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|))) (and (= .cse26 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) (exists ((v_DerPreprocessor_9 (Array Int Int))) (let ((.cse28 (store (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10))) (let ((.cse27 (select .cse28 |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select .cse27 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (= .cse27 v_DerPreprocessor_9) (= .cse26 (select (select .cse28 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))))))))) (exists ((v_DerPreprocessor_10 (Array Int Int))) (and (= (select v_DerPreprocessor_10 |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|) (exists ((v_DerPreprocessor_9 (Array Int Int))) (let ((.cse29 (select (store (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base| v_DerPreprocessor_9) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_DerPreprocessor_10) |c_ULTIMATE.start_sll_circular_append_~last~1#1.base|))) (and (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select .cse29 |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (= .cse29 v_DerPreprocessor_9))))))))) .cse2 .cse9))))) (<= |c_ULTIMATE.start_sll_circular_create_~data#1| 1) (< |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_sll_circular_append_#in~head#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) (<= |c_ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (< |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_sll_circular_append_#in~head#1.base| |c_ULTIMATE.start_sll_circular_append_~head#1.base|) (<= 0 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) (<= |c_ULTIMATE.start_sll_circular_create_#in~data#1| 1) (not (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| 0)) (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 2 |c_ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 1 |c_ULTIMATE.start_sll_circular_create_#in~data#1|) (= |c_ULTIMATE.start_sll_circular_create_#res#1.offset| |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |c_#NULL.offset| 0) (= |c_ULTIMATE.start_sll_circular_append_#in~data#1| |c_ULTIMATE.start_sll_circular_append_~data#1|) (<= 1 |c_ULTIMATE.start_sll_circular_create_~len#1|) (<= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 1 |c_ULTIMATE.start_sll_circular_create_~data#1|) (<= 1 |c_ULTIMATE.start_sll_circular_append_~data#1|) (<= 1 |c_ULTIMATE.start_sll_circular_append_#in~data#1|) (= (+ |c_ULTIMATE.start_sll_circular_create_~len#1| 1) |c_ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |c_ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |c_ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (= |c_ULTIMATE.start_main_~ptr~0#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (= |c_ULTIMATE.start_main_~count~0#1| 0) (<= 0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (not (= 2 |c_ULTIMATE.start_main_~#s~0#1.base|)) (= |c_#NULL.base| 0) (= |c_ULTIMATE.start_main_~data~0#1| 1) (= |c_ULTIMATE.start_main_~data~0#1| |c_ULTIMATE.start_sll_circular_create_#in~data#1|) (= |c_ULTIMATE.start_main_~len~0#1| |c_ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |c_ULTIMATE.start_sll_circular_append_#in~data#1| 1) (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (<= 0 |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (or (not (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) .cse3) (= |c_ULTIMATE.start_main_~ptr~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (<= |c_ULTIMATE.start_sll_circular_append_~data#1| 1) (= |c_ULTIMATE.start_sll_circular_append_#in~head#1.offset| |c_ULTIMATE.start_main_~#s~0#1.offset|) (not (= |c_ULTIMATE.start_main_~data~0#1| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~ptr~0#1.base|) (+ |c_ULTIMATE.start_main_~ptr~0#1.offset| 4)))) (or (and (= |c_ULTIMATE.start_sll_circular_append_~last~1#1.offset| 4) .cse33) (= (select (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 4) |c_ULTIMATE.start_sll_circular_append_~data#1|)) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (<= 0 |c_ULTIMATE.start_main_~#s~0#1.base|) (not (= 0 |c_ULTIMATE.start_main_~#s~0#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |c_ULTIMATE.start_sll_circular_create_#in~data#1| |c_ULTIMATE.start_sll_circular_create_~data#1|) (not (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| 0)) (<= 0 |c_ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= (select |c_#valid| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 1) (= (select |c_#length| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 8) (not (= |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| 0)) (< |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~data~0#1| |c_ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |c_ULTIMATE.start_sll_circular_create_~len#1| 1) (= |c_ULTIMATE.start_main_~len~0#1| 2)))) is different from true