./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7 --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 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:06:53,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:06:53,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:06:53,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:06:53,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:06:53,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:06:53,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:06:53,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:06:53,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:06:53,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:06:53,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:06:53,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:06:53,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:06:53,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:06:53,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:06:53,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:06:53,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:06:53,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:06:53,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:06:53,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:06:53,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:06:53,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:06:53,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:06:53,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:06:53,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:06:53,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:06:53,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:06:53,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:06:53,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:06:53,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:06:53,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:06:53,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:06:53,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:06:53,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:06:53,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:06:53,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:06:53,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:06:53,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:06:53,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:06:53,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:06:53,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:06:53,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:06:53,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:06:53,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:06:53,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:06:53,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:06:53,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:06:53,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:06:53,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:06:53,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:06:53,673 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:06:53,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:06:53,674 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:06:53,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:06:53,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:06:53,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:06:53,675 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:06:53,675 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:06:53,675 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:06:53,675 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:06:53,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:06:53,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:06:53,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:06:53,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:06:53,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:06:53,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:06:53,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:06:53,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:06:53,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:06:53,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:06:53,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:06:53,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:06:53,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:06:53,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:06:53,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:06:53,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:06:53,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:06:53,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:06:53,682 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:06:53,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:06:53,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:06:53,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:06:53,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:06:53,683 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a [2021-11-25 19:06:53,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:06:53,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:06:53,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:06:53,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:06:53,999 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:06:54,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-11-25 19:06:54,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/data/edc976e59/4b8a7119866f4ca093d84d7ac29b4844/FLAGe606c2201 [2021-11-25 19:06:54,587 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:06:54,594 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-11-25 19:06:54,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/data/edc976e59/4b8a7119866f4ca093d84d7ac29b4844/FLAGe606c2201 [2021-11-25 19:06:54,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/data/edc976e59/4b8a7119866f4ca093d84d7ac29b4844 [2021-11-25 19:06:54,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:06:54,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:06:54,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:06:54,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:06:54,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:06:54,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:06:54" (1/1) ... [2021-11-25 19:06:54,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3eb0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:54, skipping insertion in model container [2021-11-25 19:06:54,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:06:54" (1/1) ... [2021-11-25 19:06:54,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:06:55,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:06:55,347 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_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-11-25 19:06:55,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:06:55,374 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:06:55,414 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_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-11-25 19:06:55,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:06:55,455 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:06:55,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55 WrapperNode [2021-11-25 19:06:55,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:06:55,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:06:55,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:06:55,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:06:55,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,531 INFO L137 Inliner]: procedures = 126, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2021-11-25 19:06:55,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:06:55,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:06:55,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:06:55,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:06:55,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:06:55,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:06:55,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:06:55,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:06:55,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (1/1) ... [2021-11-25 19:06:55,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:06:55,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:55,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:06:55,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:06:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:06:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:06:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-25 19:06:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-25 19:06:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:06:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:06:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:06:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:06:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:06:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:06:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:06:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:06:55,768 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:06:55,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:06:56,014 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:06:56,061 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:06:56,070 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 19:06:56,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:06:56 BoogieIcfgContainer [2021-11-25 19:06:56,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:06:56,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:06:56,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:06:56,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:06:56,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:06:54" (1/3) ... [2021-11-25 19:06:56,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d1b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:06:56, skipping insertion in model container [2021-11-25 19:06:56,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:55" (2/3) ... [2021-11-25 19:06:56,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d1b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:06:56, skipping insertion in model container [2021-11-25 19:06:56,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:06:56" (3/3) ... [2021-11-25 19:06:56,086 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2021-11-25 19:06:56,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:06:56,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:06:56,172 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:06:56,179 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:06:56,179 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:06:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2021-11-25 19:06:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:06:56,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:56,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:56,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1720119795, now seen corresponding path program 1 times [2021-11-25 19:06:56,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:56,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710306481] [2021-11-25 19:06:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:56,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:06:56,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:56,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710306481] [2021-11-25 19:06:56,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710306481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:56,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:56,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:06:56,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929629568] [2021-11-25 19:06:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:56,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:06:56,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:06:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:56,487 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:06:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:56,577 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2021-11-25 19:06:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-25 19:06:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:56,588 INFO L225 Difference]: With dead ends: 37 [2021-11-25 19:06:56,588 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 19:06:56,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:56,598 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:56,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:06:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 19:06:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-25 19:06:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-11-25 19:06:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-11-25 19:06:56,655 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 12 [2021-11-25 19:06:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:56,656 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-25 19:06:56,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:06:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-11-25 19:06:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 19:06:56,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:56,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:56,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:06:56,658 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash -331774145, now seen corresponding path program 1 times [2021-11-25 19:06:56,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:56,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070982556] [2021-11-25 19:06:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:56,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:06:56,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:56,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070982556] [2021-11-25 19:06:56,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070982556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:06:56,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696367413] [2021-11-25 19:06:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:56,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:56,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:56,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:06:56,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:06:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:56,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:06:56,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:06:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:06:57,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:06:57,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696367413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:57,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:06:57,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-11-25 19:06:57,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868331628] [2021-11-25 19:06:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:57,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:06:57,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:06:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:06:57,090 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:06:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:57,157 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-11-25 19:06:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:06:57,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-25 19:06:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:57,159 INFO L225 Difference]: With dead ends: 29 [2021-11-25 19:06:57,159 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 19:06:57,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:06:57,161 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:57,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:06:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 19:06:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-11-25 19:06:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-25 19:06:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-11-25 19:06:57,168 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 18 [2021-11-25 19:06:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:57,169 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-11-25 19:06:57,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:06:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-11-25 19:06:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:06:57,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:57,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:57,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:06:57,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:57,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1883542642, now seen corresponding path program 1 times [2021-11-25 19:06:57,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329153846] [2021-11-25 19:06:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:57,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:06:57,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329153846] [2021-11-25 19:06:57,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329153846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:06:57,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100898868] [2021-11-25 19:06:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:57,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:57,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:57,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:06:57,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:06:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:57,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:06:57,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:06:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:06:57,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:06:57,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100898868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:57,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:06:57,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-11-25 19:06:57,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124569857] [2021-11-25 19:06:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:57,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:06:57,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:06:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:06:57,809 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:06:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:57,875 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2021-11-25 19:06:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:06:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-25 19:06:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:57,878 INFO L225 Difference]: With dead ends: 32 [2021-11-25 19:06:57,879 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:06:57,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:06:57,883 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:57,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 37 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:06:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:06:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2021-11-25 19:06:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-25 19:06:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-11-25 19:06:57,898 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 20 [2021-11-25 19:06:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:57,898 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-11-25 19:06:57,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:06:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-11-25 19:06:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:06:57,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:57,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:57,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:06:58,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:58,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -346740024, now seen corresponding path program 1 times [2021-11-25 19:06:58,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:58,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762671560] [2021-11-25 19:06:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:58,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:06:58,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:58,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762671560] [2021-11-25 19:06:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762671560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:06:58,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870321865] [2021-11-25 19:06:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:58,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:58,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:58,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:06:58,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:06:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:58,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:06:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:06:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:06:58,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:06:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:06:58,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870321865] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:06:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [766921253] [2021-11-25 19:06:58,545 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:06:58,545 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:06:58,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:06:58,559 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:06:58,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:06:58,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:06:58,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:06:58,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:58,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:06:58,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:58,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:06:58,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:58,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:06:59,309 INFO L388 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 [2021-11-25 19:06:59,318 INFO L388 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 [2021-11-25 19:06:59,329 INFO L388 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 [2021-11-25 19:06:59,341 INFO L388 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 [2021-11-25 19:06:59,353 INFO L388 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 [2021-11-25 19:06:59,368 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,373 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,377 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,676 INFO L388 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 [2021-11-25 19:06:59,688 INFO L388 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 [2021-11-25 19:06:59,703 INFO L388 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 [2021-11-25 19:06:59,717 INFO L388 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 [2021-11-25 19:06:59,727 INFO L388 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 [2021-11-25 19:06:59,737 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,747 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:06:59,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:06:59,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:06:59,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:06:59,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:00,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:00,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 124 [2021-11-25 19:07:00,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:00,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 124 [2021-11-25 19:07:00,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:00,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 116 [2021-11-25 19:07:00,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:07:00,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:00,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:00,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:00,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:00,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:00,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:00,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:00,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:00,883 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:07:01,066 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:05,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [766921253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:05,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:05,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 5, 5] total 18 [2021-11-25 19:07:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661432877] [2021-11-25 19:07:05,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:05,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:07:05,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:07:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:07:05,226 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-11-25 19:07:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:05,833 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-11-25 19:07:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:07:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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 21 [2021-11-25 19:07:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:05,836 INFO L225 Difference]: With dead ends: 43 [2021-11-25 19:07:05,836 INFO L226 Difference]: Without dead ends: 38 [2021-11-25 19:07:05,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:07:05,838 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 52 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:05,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 22 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2021-11-25 19:07:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-25 19:07:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 21. [2021-11-25 19:07:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-11-25 19:07:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-25 19:07:05,853 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 21 [2021-11-25 19:07:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:05,854 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-25 19:07:05,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-11-25 19:07:05,855 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-25 19:07:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:07:05,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:05,857 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:05,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:06,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:06,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2133674101, now seen corresponding path program 1 times [2021-11-25 19:07:06,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136710615] [2021-11-25 19:07:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:06,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:07:06,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:06,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136710615] [2021-11-25 19:07:06,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136710615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:06,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277080319] [2021-11-25 19:07:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:06,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:06,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:06,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:07:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:06,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:07:06,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:06,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277080319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1924914123] [2021-11-25 19:07:06,398 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:07:06,398 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:06,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:06,399 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:06,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:06,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:07:06,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:06,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:06,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:06,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:06,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:06,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:07:06,764 INFO L388 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 [2021-11-25 19:07:06,772 INFO L388 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 [2021-11-25 19:07:06,780 INFO L388 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 [2021-11-25 19:07:06,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:07:06,797 INFO L388 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 [2021-11-25 19:07:06,806 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:06,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:06,810 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:06,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:06,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:07,038 INFO L388 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 [2021-11-25 19:07:07,046 INFO L388 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 [2021-11-25 19:07:07,055 INFO L388 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 [2021-11-25 19:07:07,063 INFO L388 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 [2021-11-25 19:07:07,082 INFO L388 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 [2021-11-25 19:07:07,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:07,097 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:07,099 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:07,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:07,104 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:07,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:07,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:07,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 177 [2021-11-25 19:07:07,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:07,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 179 [2021-11-25 19:07:07,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:07,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 96 [2021-11-25 19:07:07,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:07,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2021-11-25 19:07:07,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:07,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2021-11-25 19:07:07,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:07,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 110 [2021-11-25 19:07:07,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:07,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:07,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:07:07,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:07,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:07,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:08,039 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:08,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 130 [2021-11-25 19:07:08,072 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:08,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 126 [2021-11-25 19:07:08,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:08,465 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:07:08,624 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:13,071 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '778#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (= |ULTIMATE.start_main_~s~0#1.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483648)) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (not (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (= (+ |ULTIMATE.start_sll_circular_get_data_at_~index#1| 1) |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 1 |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 3 |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (= |ULTIMATE.start_sll_circular_get_data_at_~head#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|)) (= |#NULL.base| 0))' at error location [2021-11-25 19:07:13,071 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:07:13,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:13,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2021-11-25 19:07:13,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812122882] [2021-11-25 19:07:13,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:07:13,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:07:13,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:07:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:07:13,073 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:13,147 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2021-11-25 19:07:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:07:13,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-11-25 19:07:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:13,155 INFO L225 Difference]: With dead ends: 37 [2021-11-25 19:07:13,155 INFO L226 Difference]: Without dead ends: 30 [2021-11-25 19:07:13,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:07:13,156 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:13,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:07:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-25 19:07:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-11-25 19:07:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2021-11-25 19:07:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-11-25 19:07:13,166 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 22 [2021-11-25 19:07:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:13,166 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-11-25 19:07:13,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-11-25 19:07:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:07:13,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:13,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:13,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:13,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:13,394 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1729436602, now seen corresponding path program 2 times [2021-11-25 19:07:13,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:13,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925285563] [2021-11-25 19:07:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:13,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:07:14,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925285563] [2021-11-25 19:07:14,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925285563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42290154] [2021-11-25 19:07:14,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:07:14,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:14,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:14,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:07:14,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:07:14,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:07:14,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-25 19:07:14,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:14,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:14,420 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:07:14,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:07:14,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:14,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:14,530 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:07:14,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 19:07:14,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 19:07:14,724 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:07:14,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 19:07:14,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-25 19:07:14,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:14,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:07:14,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:14,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-25 19:07:14,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 19:07:14,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:14,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-11-25 19:07:15,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2021-11-25 19:07:15,123 INFO L388 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 34 treesize of output 26 [2021-11-25 19:07:15,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-11-25 19:07:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:07:15,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:15,499 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_456 Int) (v_ArrVal_454 Int) (v_ArrVal_455 (Array Int Int))) (<= (+ (let ((.cse0 (+ 4 |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_455) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 v_ArrVal_454)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 v_ArrVal_456)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 4))) 1) (* 2 |c_ULTIMATE.start_main_~len~0#1|))) (forall ((v_ArrVal_456 Int) (v_ArrVal_454 Int) (v_ArrVal_455 (Array Int Int))) (<= (* 2 |c_ULTIMATE.start_main_~len~0#1|) (+ (let ((.cse1 (+ 4 |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_455) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse1 v_ArrVal_454)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse1 v_ArrVal_456)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 4))) 1)))) is different from false [2021-11-25 19:07:15,517 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_456 Int) (v_ArrVal_454 Int) (v_ArrVal_455 (Array Int Int))) (<= (+ (let ((.cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_455) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0 v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0 v_ArrVal_456) |c_ULTIMATE.start_main_~s~0#1.offset|) 4))) 1) (* 2 |c_ULTIMATE.start_main_~len~0#1|))) (forall ((v_ArrVal_456 Int) (v_ArrVal_454 Int) (v_ArrVal_455 (Array Int Int))) (<= (* 2 |c_ULTIMATE.start_main_~len~0#1|) (+ (let ((.cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_455) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse1 v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) .cse1 v_ArrVal_456) |c_ULTIMATE.start_main_~s~0#1.offset|) 4))) 1)))) is different from false [2021-11-25 19:07:15,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:15,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-11-25 19:07:15,568 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:15,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-11-25 19:07:15,581 INFO L388 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 39 treesize of output 23 [2021-11-25 19:07:15,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:15,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-11-25 19:07:15,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:15,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-11-25 19:07:15,692 INFO L388 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 39 treesize of output 23 [2021-11-25 19:07:15,774 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* 2 |c_ULTIMATE.start_main_~len~0#1|)) (.cse0 (+ |c_ULTIMATE.start_sll_circular_update_at_~data#1| 1))) (and (forall ((v_ArrVal_456 Int) (v_ArrVal_449 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_456) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|)) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_451) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~s~0#1.base|))) (<= .cse0 .cse1) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_451) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|)) (<= .cse1 .cse0))) is different from false [2021-11-25 19:07:15,798 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~len~0#1|)) (.cse1 (+ |c_ULTIMATE.start_sll_circular_update_at_~data#1| 1))) (and (forall ((v_ArrVal_456 Int) (v_ArrVal_449 (Array Int Int))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_449) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_456) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_451) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (<= .cse1 .cse2) (<= .cse2 .cse1) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_451) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2021-11-25 19:07:15,820 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (and (<= |c_ULTIMATE.start_main_~len~0#1| .cse0) (<= .cse0 |c_ULTIMATE.start_main_~len~0#1|) (forall ((v_ArrVal_456 Int) (v_ArrVal_449 (Array Int Int))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_449) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_456) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_451) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~s~0#1.base|))) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_451) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_main_~s~0#1.offset|) .cse1))))) is different from false [2021-11-25 19:07:15,842 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_447))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (= .cse0 (select (store (select (store .cse1 .cse0 v_ArrVal_451) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_456 Int) (v_ArrVal_449 (Array Int Int)) (v_ArrVal_445 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_445))) (= (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (select (store (select (store .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_449) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 4) v_ArrVal_456) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| (select (store (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_447))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_451)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 4) v_ArrVal_454) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) is different from false [2021-11-25 19:07:15,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:15,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 41 [2021-11-25 19:07:15,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 450 [2021-11-25 19:07:15,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:15,888 INFO L388 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 404 treesize of output 388 [2021-11-25 19:07:15,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:15,896 INFO L388 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 352 treesize of output 324 [2021-11-25 19:07:15,907 INFO L388 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 280 treesize of output 252 [2021-11-25 19:07:16,010 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:07:16,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 1 [2021-11-25 19:07:16,017 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:07:16,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 1 [2021-11-25 19:07:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-25 19:07:16,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42290154] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:16,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [226669364] [2021-11-25 19:07:16,560 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:07:16,560 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:16,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:16,561 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:16,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:16,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:16,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:07:16,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:16,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:16,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:16,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:16,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:16,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:07:16,832 INFO L388 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 [2021-11-25 19:07:16,839 INFO L388 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 [2021-11-25 19:07:16,846 INFO L388 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 [2021-11-25 19:07:16,854 INFO L388 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 [2021-11-25 19:07:16,861 INFO L388 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 [2021-11-25 19:07:16,871 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:16,873 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:16,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:16,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:16,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:17,081 INFO L388 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 [2021-11-25 19:07:17,088 INFO L388 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 [2021-11-25 19:07:17,098 INFO L388 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 [2021-11-25 19:07:17,106 INFO L388 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 [2021-11-25 19:07:17,114 INFO L388 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 [2021-11-25 19:07:17,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:17,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:17,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:17,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:17,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:17,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:17,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:17,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:17,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:17,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 124 [2021-11-25 19:07:17,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:17,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 124 [2021-11-25 19:07:17,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:17,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 120 [2021-11-25 19:07:17,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:17,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:07:17,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:17,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:17,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:17,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:17,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:17,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:17,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:07:18,084 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:07:18,235 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:23,845 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1088#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483648)) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_sll_circular_get_data_at_#in~index#1| 1) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset| 0) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (not (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~expected~0#1| 3) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 3 |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:07:23,845 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:07:23,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:23,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 53 [2021-11-25 19:07:23,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856431959] [2021-11-25 19:07:23,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:07:23,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-25 19:07:23,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-25 19:07:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3466, Unknown=6, NotChecked=738, Total=4422 [2021-11-25 19:07:23,850 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 53 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 19:07:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:25,663 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2021-11-25 19:07:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:07:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2021-11-25 19:07:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:25,667 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:07:25,667 INFO L226 Difference]: Without dead ends: 49 [2021-11-25 19:07:25,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=359, Invalid=5209, Unknown=6, NotChecked=906, Total=6480 [2021-11-25 19:07:25,671 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:25,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 371 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 653 Invalid, 0 Unknown, 281 Unchecked, 0.5s Time] [2021-11-25 19:07:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-25 19:07:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2021-11-25 19:07:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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) [2021-11-25 19:07:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2021-11-25 19:07:25,698 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 24 [2021-11-25 19:07:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:25,699 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2021-11-25 19:07:25,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 19:07:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2021-11-25 19:07:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:07:25,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:25,701 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:25,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:25,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:25,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash 113145472, now seen corresponding path program 3 times [2021-11-25 19:07:25,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:25,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525220224] [2021-11-25 19:07:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:25,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:26,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:26,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525220224] [2021-11-25 19:07:26,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525220224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:26,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576880975] [2021-11-25 19:07:26,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:07:26,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:26,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:26,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:26,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:07:26,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:07:26,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:07:26,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:07:26,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:07:26,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:07:26,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576880975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:26,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906042268] [2021-11-25 19:07:26,333 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:07:26,333 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:26,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:26,334 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:26,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:26,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:07:26,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:26,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:26,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:26,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:26,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:26,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:26,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:07:26,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-25 19:07:26,508 INFO L388 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 [2021-11-25 19:07:26,515 INFO L388 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 [2021-11-25 19:07:26,524 INFO L388 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 [2021-11-25 19:07:26,532 INFO L388 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 [2021-11-25 19:07:26,569 INFO L388 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 [2021-11-25 19:07:26,576 INFO L388 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 [2021-11-25 19:07:26,583 INFO L388 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 [2021-11-25 19:07:26,591 INFO L388 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 [2021-11-25 19:07:26,601 INFO L388 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 [2021-11-25 19:07:26,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:26,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:26,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:26,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:26,720 INFO L388 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 [2021-11-25 19:07:26,728 INFO L388 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 [2021-11-25 19:07:26,740 INFO L388 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 [2021-11-25 19:07:26,748 INFO L388 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 [2021-11-25 19:07:26,755 INFO L388 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 [2021-11-25 19:07:26,794 INFO L388 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 [2021-11-25 19:07:26,801 INFO L388 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 [2021-11-25 19:07:26,810 INFO L388 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 [2021-11-25 19:07:26,820 INFO L388 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 [2021-11-25 19:07:26,855 INFO L388 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 [2021-11-25 19:07:26,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:26,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:26,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:26,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:26,991 INFO L388 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 [2021-11-25 19:07:26,998 INFO L388 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 [2021-11-25 19:07:27,007 INFO L388 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 [2021-11-25 19:07:27,016 INFO L388 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 [2021-11-25 19:07:27,024 INFO L388 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 [2021-11-25 19:07:27,066 INFO L388 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 [2021-11-25 19:07:27,075 INFO L388 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 [2021-11-25 19:07:27,083 INFO L388 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 [2021-11-25 19:07:27,091 INFO L388 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 [2021-11-25 19:07:27,099 INFO L388 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 [2021-11-25 19:07:27,155 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:07:27,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:07:27,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:27,190 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:07:27,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:07:27,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:27,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:27,566 INFO L354 Elim1Store]: treesize reduction 130, result has 12.2 percent of original size [2021-11-25 19:07:27,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 336 treesize of output 314 [2021-11-25 19:07:27,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:27,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:27,618 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-11-25 19:07:27,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 336 treesize of output 318 [2021-11-25 19:07:27,644 INFO L354 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2021-11-25 19:07:27,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 329 [2021-11-25 19:07:27,912 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:27,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 140 [2021-11-25 19:07:27,936 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:27,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2021-11-25 19:07:28,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:28,295 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 79 for LOIs [2021-11-25 19:07:28,505 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:38,162 WARN L227 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 114 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:07:40,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1443#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (= |ULTIMATE.start_main_~s~0#1.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483648)) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (not (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~expected~0#1| 3) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (= (+ |ULTIMATE.start_sll_circular_get_data_at_~index#1| 1) |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 1 |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 3 |ULTIMATE.start_main_~expected~0#1|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (= |ULTIMATE.start_sll_circular_get_data_at_~head#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|)) (= |#NULL.base| 0))' at error location [2021-11-25 19:07:40,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:07:40,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:40,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-25 19:07:40,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948870314] [2021-11-25 19:07:40,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:07:40,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:07:40,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:40,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:07:40,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:07:40,155 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:40,316 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2021-11-25 19:07:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:07:40,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-25 19:07:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:40,318 INFO L225 Difference]: With dead ends: 49 [2021-11-25 19:07:40,318 INFO L226 Difference]: Without dead ends: 38 [2021-11-25 19:07:40,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:07:40,319 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:40,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:07:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-25 19:07:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-11-25 19:07:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2021-11-25 19:07:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-11-25 19:07:40,334 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 25 [2021-11-25 19:07:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:40,335 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-11-25 19:07:40,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-11-25 19:07:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:07:40,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:40,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:40,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:40,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:40,550 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2034892670, now seen corresponding path program 4 times [2021-11-25 19:07:40,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:40,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006642917] [2021-11-25 19:07:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:40,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:07:40,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:40,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006642917] [2021-11-25 19:07:40,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006642917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:40,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12337870] [2021-11-25 19:07:40,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:07:40,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:40,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:40,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:07:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:40,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:07:40,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:40,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:40,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12337870] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:40,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869845697] [2021-11-25 19:07:40,875 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:07:40,875 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:40,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:40,876 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:40,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:40,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:40,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:07:40,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:40,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:40,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:40,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:07:40,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:40,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:41,020 INFO L388 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 [2021-11-25 19:07:41,027 INFO L388 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 [2021-11-25 19:07:41,033 INFO L388 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 [2021-11-25 19:07:41,041 INFO L388 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 [2021-11-25 19:07:41,050 INFO L388 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 [2021-11-25 19:07:41,094 INFO L388 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 [2021-11-25 19:07:41,101 INFO L388 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 [2021-11-25 19:07:41,108 INFO L388 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 [2021-11-25 19:07:41,116 INFO L388 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 [2021-11-25 19:07:41,125 INFO L388 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 [2021-11-25 19:07:41,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:41,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:41,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:41,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:41,234 INFO L388 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 [2021-11-25 19:07:41,243 INFO L388 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 [2021-11-25 19:07:41,252 INFO L388 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 [2021-11-25 19:07:41,258 INFO L388 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 [2021-11-25 19:07:41,265 INFO L388 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 [2021-11-25 19:07:41,311 INFO L388 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 [2021-11-25 19:07:41,319 INFO L388 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 [2021-11-25 19:07:41,327 INFO L388 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 [2021-11-25 19:07:41,336 INFO L388 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 [2021-11-25 19:07:41,345 INFO L388 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 [2021-11-25 19:07:41,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:41,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:41,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 177 [2021-11-25 19:07:41,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:41,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 179 [2021-11-25 19:07:41,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:41,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 96 [2021-11-25 19:07:41,510 INFO L388 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 [2021-11-25 19:07:41,517 INFO L388 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 [2021-11-25 19:07:41,528 INFO L388 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 [2021-11-25 19:07:41,534 INFO L388 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 [2021-11-25 19:07:41,543 INFO L388 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 [2021-11-25 19:07:41,583 INFO L388 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 [2021-11-25 19:07:41,590 INFO L388 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 [2021-11-25 19:07:41,599 INFO L388 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 [2021-11-25 19:07:41,608 INFO L388 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 [2021-11-25 19:07:41,617 INFO L388 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 [2021-11-25 19:07:41,679 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:07:41,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:07:41,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:41,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:41,712 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:07:41,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:07:41,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:41,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:42,048 INFO L354 Elim1Store]: treesize reduction 130, result has 12.2 percent of original size [2021-11-25 19:07:42,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 336 treesize of output 314 [2021-11-25 19:07:42,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:42,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:42,118 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-11-25 19:07:42,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 336 treesize of output 318 [2021-11-25 19:07:42,154 INFO L354 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2021-11-25 19:07:42,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 329 [2021-11-25 19:07:42,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:42,446 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:42,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 142 [2021-11-25 19:07:42,478 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:42,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 138 [2021-11-25 19:07:42,814 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 79 for LOIs [2021-11-25 19:07:43,010 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:07:52,291 WARN L227 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 114 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:07:54,183 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1770#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (= |ULTIMATE.start_main_~s~0#1.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483648)) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (not (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~expected~0#1| 3) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (= (+ |ULTIMATE.start_sll_circular_get_data_at_~index#1| 1) |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 1 |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 3 |ULTIMATE.start_main_~expected~0#1|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (= |ULTIMATE.start_sll_circular_get_data_at_~head#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|)) (= |#NULL.base| 0))' at error location [2021-11-25 19:07:54,183 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:07:54,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:07:54,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2021-11-25 19:07:54,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5012588] [2021-11-25 19:07:54,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:07:54,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:07:54,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:07:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:07:54,185 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:54,302 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-11-25 19:07:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:07:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-25 19:07:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:54,303 INFO L225 Difference]: With dead ends: 50 [2021-11-25 19:07:54,303 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 19:07:54,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:07:54,304 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:54,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 45 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:07:54,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 19:07:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2021-11-25 19:07:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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) [2021-11-25 19:07:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2021-11-25 19:07:54,316 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2021-11-25 19:07:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:54,316 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2021-11-25 19:07:54,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:07:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2021-11-25 19:07:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:07:54,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:54,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:54,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:54,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:54,519 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2075214153, now seen corresponding path program 5 times [2021-11-25 19:07:54,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285159747] [2021-11-25 19:07:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:54,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:07:54,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:54,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285159747] [2021-11-25 19:07:54,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285159747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:54,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340822083] [2021-11-25 19:07:54,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:07:54,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:54,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:54,605 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:54,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:07:54,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:07:54,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:07:54,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:07:54,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:07:54,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:07:54,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340822083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:54,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:07:54,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2021-11-25 19:07:54,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47597108] [2021-11-25 19:07:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:54,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:07:54,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:07:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:07:54,839 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:07:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:54,903 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-11-25 19:07:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:07:54,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-11-25 19:07:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:54,905 INFO L225 Difference]: With dead ends: 42 [2021-11-25 19:07:54,905 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 19:07:54,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:07:54,908 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:54,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 40 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:07:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 19:07:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-25 19:07:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 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) [2021-11-25 19:07:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-11-25 19:07:54,933 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2021-11-25 19:07:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:54,934 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-11-25 19:07:54,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:07:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-11-25 19:07:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:07:54,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:54,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:54,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:07:55,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 19:07:55,154 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash 829532047, now seen corresponding path program 1 times [2021-11-25 19:07:55,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:55,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005327313] [2021-11-25 19:07:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:55,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:07:55,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:55,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005327313] [2021-11-25 19:07:55,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005327313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:55,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859471437] [2021-11-25 19:07:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:55,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:07:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:07:55,491 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:07:55,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:07:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:55,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-25 19:07:55,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:55,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 19:07:55,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:07:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:55,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:56,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-25 19:07:56,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:07:56,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859471437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:07:56,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [768017374] [2021-11-25 19:07:56,146 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:07:56,146 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:07:56,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:07:56,147 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:07:56,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:56,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:56,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:07:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:07:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:07:56,307 INFO L388 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 [2021-11-25 19:07:56,314 INFO L388 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 [2021-11-25 19:07:56,323 INFO L388 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 [2021-11-25 19:07:56,331 INFO L388 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 [2021-11-25 19:07:56,338 INFO L388 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 [2021-11-25 19:07:56,374 INFO L388 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 [2021-11-25 19:07:56,381 INFO L388 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 [2021-11-25 19:07:56,388 INFO L388 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 [2021-11-25 19:07:56,395 INFO L388 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 [2021-11-25 19:07:56,402 INFO L388 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 [2021-11-25 19:07:56,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:56,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:56,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:56,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,650 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,654 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,663 INFO L388 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 [2021-11-25 19:07:56,670 INFO L388 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 [2021-11-25 19:07:56,678 INFO L388 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 [2021-11-25 19:07:56,686 INFO L388 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 [2021-11-25 19:07:56,693 INFO L388 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 [2021-11-25 19:07:56,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,822 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,825 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:56,834 INFO L388 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 [2021-11-25 19:07:56,840 INFO L388 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 [2021-11-25 19:07:56,854 INFO L388 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 [2021-11-25 19:07:56,862 INFO L388 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 [2021-11-25 19:07:56,868 INFO L388 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 [2021-11-25 19:07:56,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:56,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:56,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:56,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:07:57,249 INFO L388 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 [2021-11-25 19:07:57,257 INFO L388 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 [2021-11-25 19:07:57,264 INFO L388 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 [2021-11-25 19:07:57,280 INFO L388 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 [2021-11-25 19:07:57,291 INFO L388 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 [2021-11-25 19:07:57,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,303 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,305 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,489 INFO L388 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 [2021-11-25 19:07:57,498 INFO L388 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 [2021-11-25 19:07:57,505 INFO L388 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 [2021-11-25 19:07:57,513 INFO L388 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 [2021-11-25 19:07:57,520 INFO L388 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 [2021-11-25 19:07:57,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,530 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:07:57,598 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:07:57,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:07:57,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:07:57,629 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:07:57,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:07:57,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:57,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:57,895 INFO L354 Elim1Store]: treesize reduction 130, result has 12.2 percent of original size [2021-11-25 19:07:57,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 331 treesize of output 309 [2021-11-25 19:07:57,933 INFO L354 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2021-11-25 19:07:57,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 325 treesize of output 324 [2021-11-25 19:07:57,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:57,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:07:57,987 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-11-25 19:07:57,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 323 treesize of output 305 [2021-11-25 19:07:58,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:07:58,216 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:58,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 140 [2021-11-25 19:07:58,240 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:07:58,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2021-11-25 19:07:58,826 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 75 for LOIs [2021-11-25 19:07:59,025 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:06,711 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 110 DAG size of output: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:08:08,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2350#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483648)) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_~index#1|) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_sll_circular_get_data_at_#in~index#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset| 0) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (not (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~expected~0#1| 3) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:08,871 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:08,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:08,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 31 [2021-11-25 19:08:08,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639734069] [2021-11-25 19:08:08,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:08,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:08:08,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:08:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 19:08:08,874 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 30 states have internal predecessors, (59), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:08:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:09,939 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-11-25 19:08:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 19:08:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 30 states have internal predecessors, (59), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 27 [2021-11-25 19:08:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:09,941 INFO L225 Difference]: With dead ends: 84 [2021-11-25 19:08:09,941 INFO L226 Difference]: Without dead ends: 82 [2021-11-25 19:08:09,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=440, Invalid=3466, Unknown=0, NotChecked=0, Total=3906 [2021-11-25 19:08:09,943 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 204 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:09,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 278 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:08:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-25 19:08:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2021-11-25 19:08:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 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) [2021-11-25 19:08:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-11-25 19:08:09,963 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2021-11-25 19:08:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:09,964 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-11-25 19:08:09,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 30 states have internal predecessors, (59), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:08:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-11-25 19:08:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:08:09,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:09,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:09,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 19:08:10,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:08:10,182 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash -56597362, now seen corresponding path program 2 times [2021-11-25 19:08:10,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:10,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129276962] [2021-11-25 19:08:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:10,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:08:10,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:10,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129276962] [2021-11-25 19:08:10,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129276962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:10,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656449451] [2021-11-25 19:08:10,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:08:10,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:10,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:10,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:10,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:08:10,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:08:10,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:08:10,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:08:10,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:08:10,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:08:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:08:10,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656449451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:08:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381759094] [2021-11-25 19:08:10,490 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 19:08:10,490 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:08:10,491 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:08:10,491 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:08:10,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:08:10,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:08:10,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:08:10,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:10,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:08:10,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:10,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:08:10,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:10,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:08:10,745 INFO L388 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 [2021-11-25 19:08:10,751 INFO L388 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 [2021-11-25 19:08:10,759 INFO L388 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 [2021-11-25 19:08:10,767 INFO L388 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 [2021-11-25 19:08:10,772 INFO L388 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 [2021-11-25 19:08:10,779 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,784 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,787 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,884 INFO L388 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 [2021-11-25 19:08:10,891 INFO L388 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 [2021-11-25 19:08:10,897 INFO L388 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 [2021-11-25 19:08:10,903 INFO L388 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 [2021-11-25 19:08:10,909 INFO L388 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 [2021-11-25 19:08:10,930 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:08:10,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:08:10,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:08:10,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:08:10,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:08:11,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:08:11,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:08:11,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:08:11,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:08:11,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:08:11,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:08:11,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:08:11,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:08:11,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 19:08:11,516 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:08:11,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 130 [2021-11-25 19:08:11,539 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:08:11,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 126 [2021-11-25 19:08:11,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:08:11,965 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:08:12,113 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:16,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2800#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483648)) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_~index#1|) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_sll_circular_get_data_at_#in~index#1| 1) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset| 0) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (not (= |ULTIMATE.start_sll_circular_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~expected~0#1| 3) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:08:16,720 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:08:16,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:08:16,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2021-11-25 19:08:16,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025671282] [2021-11-25 19:08:16,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:08:16,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:08:16,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:08:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:08:16,722 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:16,807 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2021-11-25 19:08:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:08:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-11-25 19:08:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:16,808 INFO L225 Difference]: With dead ends: 63 [2021-11-25 19:08:16,808 INFO L226 Difference]: Without dead ends: 39 [2021-11-25 19:08:16,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:08:16,809 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:16,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 41 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:08:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-25 19:08:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-11-25 19:08:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-11-25 19:08:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-11-25 19:08:16,821 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 28 [2021-11-25 19:08:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:16,822 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-11-25 19:08:16,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:08:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-11-25 19:08:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:08:16,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:16,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:16,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:17,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:17,030 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1330979448, now seen corresponding path program 6 times [2021-11-25 19:08:17,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:17,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37914589] [2021-11-25 19:08:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:17,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:08:17,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37914589] [2021-11-25 19:08:17,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37914589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463067045] [2021-11-25 19:08:17,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:08:17,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:17,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:17,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:17,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:08:17,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:08:17,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:08:17,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:08:17,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:08:17,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:17,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463067045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:17,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:08:17,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-25 19:08:17,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389350305] [2021-11-25 19:08:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:17,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:08:17,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:08:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:17,515 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:08:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:17,528 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2021-11-25 19:08:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:08:17,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-25 19:08:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:17,531 INFO L225 Difference]: With dead ends: 38 [2021-11-25 19:08:17,532 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:08:17,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:08:17,533 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:17,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:08:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:08:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:08:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:08:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:08:17,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-11-25 19:08:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:17,536 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:08:17,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:08:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:08:17,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:08:17,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:08:17,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:17,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:17,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:08:20,574 INFO L861 garLoopResultBuilder]: At program point L638(lines 620 639) the Hoare annotation is: true [2021-11-25 19:08:20,575 INFO L854 garLoopResultBuilder]: At program point L614-2(lines 614 617) the Hoare annotation is: (let ((.cse24 (+ |ULTIMATE.start_sll_circular_update_at_~index#1| 1)) (.cse40 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse43 (+ |ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse1 (<= 0 .cse43)) (.cse12 (<= |ULTIMATE.start_sll_circular_update_at_~data#1| 3)) (.cse15 (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (.cse8 (select .cse40 |ULTIMATE.start_main_~s~0#1.offset|)) (.cse16 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|)) (.cse25 (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0)) (.cse29 (<= 1 |ULTIMATE.start_sll_circular_update_at_~data#1|)) (.cse30 (<= 0 .cse24)) (.cse33 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse0 (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|)) (.cse2 (<= |ULTIMATE.start_sll_circular_update_at_#in~head#1.offset| 0)) (.cse3 (<= |ULTIMATE.start_sll_circular_update_at_#in~data#1| 3)) (.cse4 (<= 0 (+ |ULTIMATE.start_sll_circular_update_at_#in~index#1| 1))) (.cse5 (<= 1 |ULTIMATE.start_main_~new_data~0#1|)) (.cse6 (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1)) (.cse31 (= |ULTIMATE.start_sll_circular_update_at_~head#1.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse7 (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0)) (.cse9 (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0)) (.cse10 (<= |ULTIMATE.start_sll_circular_update_at_~index#1| 1)) (.cse11 (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2)) (.cse13 (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) (.cse14 (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|)) (.cse39 (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.offset|)) (.cse17 (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|)) (.cse18 (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_sll_circular_update_at_~data#1|)) (.cse19 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1)) (.cse20 (<= 1 |ULTIMATE.start_sll_circular_update_at_#in~data#1|)) (.cse21 (<= |ULTIMATE.start_sll_circular_update_at_#in~index#1| 1)) (.cse22 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse23 (<= |ULTIMATE.start_sll_circular_create_~data#1| 1)) (.cse26 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse27 (= |#NULL.offset| 0)) (.cse28 (<= 0 |ULTIMATE.start_sll_circular_update_at_#in~head#1.offset|)) (.cse32 (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|)) (.cse34 (<= |ULTIMATE.start_main_~new_data~0#1| 3)) (.cse35 (<= 0 |#StackHeapBarrier|)) (.cse36 (= |ULTIMATE.start_main_~len~0#1| .cse43)) (.cse42 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) 0)) (.cse37 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse38 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_sll_circular_update_at_~head#1.offset| 0) .cse5 .cse6 .cse7 (= .cse8 |ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (= .cse16 0) .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (<= .cse24 |ULTIMATE.start_main_~i~0#1|) .cse25 .cse26 .cse27 .cse28 .cse29 .cse30 (not .cse31) .cse32 .cse33 .cse34 .cse35 .cse36 .cse37 .cse38) (let ((.cse41 (* 2 |ULTIMATE.start_main_~len~0#1|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse31 .cse7 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse39 (not (= (select .cse40 0) |ULTIMATE.start_main_~s~0#1.base|)) (= .cse41 (+ (select (select |#memory_int| .cse8) (+ .cse16 4)) 1)) .cse17 .cse18 (<= |ULTIMATE.start_sll_circular_update_at_~index#1| 0) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse27 (= .cse41 (+ 2 |ULTIMATE.start_sll_circular_update_at_~data#1|)) .cse28 .cse29 .cse30 .cse32 .cse33 .cse34 .cse35 .cse42 .cse37 .cse38)) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse31 .cse7 (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) .cse9 .cse10 .cse11 .cse13 .cse14 .cse39 .cse17 (<= 1 |ULTIMATE.start_sll_circular_update_at_~index#1|) .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse26 .cse27 .cse28 .cse32 .cse34 .cse35 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_update_at_~head#1.base|) |ULTIMATE.start_sll_circular_update_at_~head#1.offset|) |ULTIMATE.start_sll_circular_update_at_~head#1.base|)) .cse36 .cse42 .cse37 .cse38)))) [2021-11-25 19:08:20,575 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:08:20,575 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 633) no Hoare annotation was computed. [2021-11-25 19:08:20,576 INFO L861 garLoopResultBuilder]: At program point L598-2(lines 598 602) the Hoare annotation is: true [2021-11-25 19:08:20,576 INFO L854 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse34 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|)) 4)) (.cse4 (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|)) (.cse35 (* 2 |ULTIMATE.start_main_~len~0#1|)) (.cse36 (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) 4))) (let ((.cse17 (= |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 0)) (.cse0 (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|)) (.cse30 (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0)) (.cse1 (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1)) (.cse2 (= |ULTIMATE.start_sll_circular_update_at_~head#1.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse3 (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0)) (.cse33 (select (select |#memory_int| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) (+ |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| 4))) (.cse5 (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0)) (.cse6 (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2)) (.cse7 (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) (.cse8 (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|)) (.cse9 (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (.cse10 (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.offset|)) (.cse11 (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|)) (.cse12 (<= |ULTIMATE.start_sll_circular_update_at_~index#1| 0)) (.cse31 (<= 0 |ULTIMATE.start_main_~i~0#1|)) (.cse13 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1)) (.cse14 (<= .cse36 |ULTIMATE.start_main_~len~0#1|)) (.cse15 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse16 (<= |ULTIMATE.start_sll_circular_create_~data#1| 1)) (.cse18 (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse20 (= |#NULL.offset| 0)) (.cse21 (= .cse35 (+ 2 |ULTIMATE.start_sll_circular_update_at_~data#1|))) (.cse22 (<= .cse34 .cse4)) (.cse23 (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|)) (.cse32 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse24 (<= 0 |#StackHeapBarrier|)) (.cse25 (<= .cse35 (+ 2 .cse36))) (.cse26 (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1))) (.cse27 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) 0)) (.cse28 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse29 (= |#NULL.base| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~s~0#1.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) .cse1 .cse2 .cse3 (= .cse4 |ULTIMATE.start_main_~expected~0#1|) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (= |ULTIMATE.start_sll_circular_get_data_at_~index#1| |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) .cse17 .cse18 .cse19 .cse20 (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_sll_circular_get_data_at_#in~index#1|) .cse21 .cse22 (= |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.offset|) .cse23 .cse24 .cse25 .cse26 .cse27 (= |ULTIMATE.start_sll_circular_get_data_at_~head#1.base| |ULTIMATE.start_sll_circular_get_data_at_#in~head#1.base|) .cse28 .cse29 (<= |ULTIMATE.start_main_~expected~0#1| (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_get_data_at_~head#1.base|) |ULTIMATE.start_sll_circular_get_data_at_~head#1.offset|)) 4))) (and .cse0 .cse30 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= 2 |ULTIMATE.start_main_~expected~0#1|) .cse11 (= .cse4 |ULTIMATE.start_sll_circular_update_at_~data#1|) .cse12 .cse31 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 .cse32 .cse24 .cse25 (= .cse33 2) .cse28 .cse29) (and .cse0 .cse30 .cse1 .cse2 .cse3 (= (* 2 |ULTIMATE.start_main_~expected~0#1|) (+ .cse33 (* 2 (div (+ (* |ULTIMATE.start_main_~expected~0#1| (- 1)) 1) (- 2))) 1)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse31 .cse13 (= (mod (+ |ULTIMATE.start_main_~expected~0#1| 1) (- 2)) 0) .cse14 .cse15 .cse16 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (<= .cse4 .cse34) .cse32 .cse24 .cse25 .cse26 .cse27 .cse28 .cse29)))) [2021-11-25 19:08:20,576 INFO L854 garLoopResultBuilder]: At program point L632(lines 620 639) the Hoare annotation is: false [2021-11-25 19:08:20,576 INFO L854 garLoopResultBuilder]: At program point L625-3(lines 625 628) the Hoare annotation is: (let ((.cse26 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|))) (let ((.cse8 (= .cse26 0)) (.cse1 (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|)) (.cse2 (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1)) (.cse3 (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0)) (.cse4 (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0)) (.cse5 (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2)) (.cse6 (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) (.cse7 (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|)) (.cse22 (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (.cse21 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|)) (.cse9 (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|)) (.cse24 (<= |ULTIMATE.start_sll_circular_update_at_~index#1| 0)) (.cse10 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1)) (.cse11 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse12 (<= |ULTIMATE.start_sll_circular_create_~data#1| 1)) (.cse25 (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0)) (.cse13 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse14 (= |#NULL.offset| 0)) (.cse15 (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|)) (.cse27 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse16 (<= 0 |#StackHeapBarrier|)) (.cse19 (* 2 |ULTIMATE.start_main_~len~0#1|)) (.cse17 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse18 (= |#NULL.base| 0))) (or (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) |ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (and (= |ULTIMATE.start_sll_circular_create_~last~0#1.base| .cse0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (forall ((v_ArrVal_454 Int) (v_ArrVal_451 (Array Int Int))) (not (= (select (store (select (store |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_451) |ULTIMATE.start_main_~s~0#1.base|) (+ |ULTIMATE.start_main_~s~0#1.offset| 4) v_ArrVal_454) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~s~0#1.base|))) .cse13 .cse14 .cse15 .cse16 (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (not (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| .cse0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 0) .cse17 .cse18)) (and .cse1 (= .cse19 (+ |ULTIMATE.start_sll_circular_update_at_~data#1| 1)) .cse2 (forall ((v_ArrVal_456 Int) (v_ArrVal_454 Int) (v_ArrVal_455 (Array Int Int))) (<= (+ (let ((.cse20 (+ |ULTIMATE.start_main_~s~0#1.offset| 4))) (select (select (store |#memory_int| |ULTIMATE.start_main_~s~0#1.base| v_ArrVal_455) (select (store (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) .cse20 v_ArrVal_454) |ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (store (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|) .cse20 v_ArrVal_456) |ULTIMATE.start_main_~s~0#1.offset|) 4))) 1) (* 2 |ULTIMATE.start_main_~len~0#1|))) .cse3 (= .cse21 |ULTIMATE.start_sll_circular_update_at_~head#1.base|) (= |ULTIMATE.start_main_~len~0#1| (+ 2 |ULTIMATE.start_main_~i~0#1|)) .cse4 .cse5 .cse6 .cse7 .cse22 .cse8 .cse9 (forall ((v_ArrVal_456 Int) (v_ArrVal_454 Int) (v_ArrVal_455 (Array Int Int))) (<= (* 2 |ULTIMATE.start_main_~len~0#1|) (+ (let ((.cse23 (+ |ULTIMATE.start_main_~s~0#1.offset| 4))) (select (select (store |#memory_int| |ULTIMATE.start_main_~s~0#1.base| v_ArrVal_455) (select (store (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) .cse23 v_ArrVal_454) |ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (store (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|) .cse23 v_ArrVal_456) |ULTIMATE.start_main_~s~0#1.offset|) 4))) 1))) .cse24 .cse10 .cse11 .cse12 .cse25 .cse13 .cse14 (= .cse26 |ULTIMATE.start_sll_circular_update_at_~head#1.offset|) .cse15 .cse27 .cse16 .cse17 .cse18) (let ((.cse28 (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) 4))) (and .cse1 .cse2 (= |ULTIMATE.start_sll_circular_update_at_~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse22 (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.offset|) (= .cse19 (+ (select (select |#memory_int| .cse21) (+ .cse26 4)) 1)) .cse9 .cse24 .cse10 (<= .cse28 |ULTIMATE.start_main_~len~0#1|) .cse11 .cse12 (<= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) .cse28) .cse25 .cse13 .cse14 (= .cse19 (+ 2 |ULTIMATE.start_sll_circular_update_at_~data#1|)) .cse15 .cse27 .cse16 (<= .cse19 (+ 2 .cse28)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) 0) .cse17 .cse18))))) [2021-11-25 19:08:20,576 INFO L854 garLoopResultBuilder]: At program point L584(line 584) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~data~0#1| |ULTIMATE.start_sll_circular_create_#in~data#1|) (= 2 (select |#length| 1)) (= |ULTIMATE.start_sll_circular_create_#in~data#1| |ULTIMATE.start_sll_circular_create_~data#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (= (select |#valid| 0) 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 27 (select |#length| 2)) (= (select .cse0 1) 0) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_~len#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:08:20,577 INFO L858 garLoopResultBuilder]: For program point L584-1(line 584) no Hoare annotation was computed. [2021-11-25 19:08:20,577 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 637) no Hoare annotation was computed. [2021-11-25 19:08:20,577 INFO L854 garLoopResultBuilder]: At program point L586-2(lines 586 591) the Hoare annotation is: (let ((.cse1 (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|)) (.cse2 (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1)) (.cse3 (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0)) (.cse4 (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0)) (.cse5 (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2)) (.cse6 (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) (.cse7 (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|)) (.cse8 (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|)) (.cse9 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse10 (<= |ULTIMATE.start_sll_circular_create_~data#1| 1)) (.cse11 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (<= 0 |#StackHeapBarrier|)) (.cse14 (= |#NULL.base| 0))) (or (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) |ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (and (= |ULTIMATE.start_sll_circular_create_~last~0#1.base| .cse0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) .cse9 .cse10 .cse11 .cse12 .cse13 (not (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| .cse0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 0) .cse14)) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) .cse11 .cse12 (= (select |#valid| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) 1) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_~len#1|) .cse13 .cse14))) [2021-11-25 19:08:20,577 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:08:20,577 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 605) no Hoare annotation was computed. [2021-11-25 19:08:20,577 INFO L854 garLoopResultBuilder]: At program point L587(line 587) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#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_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= (select |#valid| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) 1) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_~len#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2021-11-25 19:08:20,577 INFO L858 garLoopResultBuilder]: For program point L587-1(line 587) no Hoare annotation was computed. [2021-11-25 19:08:20,577 INFO L858 garLoopResultBuilder]: For program point L596(lines 596 604) no Hoare annotation was computed. [2021-11-25 19:08:20,578 INFO L854 garLoopResultBuilder]: At program point L629-3(lines 629 634) the Hoare annotation is: (let ((.cse28 (* 2 |ULTIMATE.start_main_~len~0#1|)) (.cse17 (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) 4))) (let ((.cse0 (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|)) (.cse1 (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1)) (.cse2 (= |ULTIMATE.start_sll_circular_update_at_~head#1.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse3 (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0)) (.cse4 (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0)) (.cse5 (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2)) (.cse6 (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) (.cse7 (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|)) (.cse8 (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (.cse9 (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.offset|)) (.cse10 (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|)) (.cse11 (<= |ULTIMATE.start_sll_circular_update_at_~index#1| 0)) (.cse12 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1)) (.cse13 (<= .cse17 |ULTIMATE.start_main_~len~0#1|)) (.cse14 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse15 (<= |ULTIMATE.start_sll_circular_create_~data#1| 1)) (.cse18 (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse20 (= |#NULL.offset| 0)) (.cse21 (= .cse28 (+ 2 |ULTIMATE.start_sll_circular_update_at_~data#1|))) (.cse22 (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|)) (.cse16 (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|)) (.cse23 (<= 0 |#StackHeapBarrier|)) (.cse24 (<= .cse28 (+ 2 .cse17))) (.cse25 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse26 (= |#NULL.base| 0))) (or (and .cse0 (<= |ULTIMATE.start_sll_circular_get_data_at_~index#1| 0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (<= .cse16 .cse17) .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26) (let ((.cse27 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|)) 4))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse18 .cse19 .cse20 .cse21 (<= .cse27 .cse16) .cse22 (<= .cse16 .cse27) .cse23 .cse24 (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_update_at_~head#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) 0) .cse25 .cse26))))) [2021-11-25 19:08:20,578 INFO L858 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2021-11-25 19:08:20,578 INFO L861 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-11-25 19:08:20,578 INFO L854 garLoopResultBuilder]: At program point node_createENTRY(lines 574 582) the Hoare annotation is: (or (not (<= 1 |node_create_#in~data#1|)) (not (= |#NULL.offset| 0)) (not (<= |node_create_#in~data#1| 1)) (not (= |#NULL.base| 0)) (not (<= 0 |#StackHeapBarrier|)) (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|))) [2021-11-25 19:08:20,578 INFO L858 garLoopResultBuilder]: For program point node_createEXIT(lines 574 582) no Hoare annotation was computed. [2021-11-25 19:08:20,581 INFO L732 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1] [2021-11-25 19:08:20,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:08:20,593 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,594 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,594 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,599 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,599 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,599 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,603 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,604 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,604 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,609 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,609 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,609 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,614 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,614 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,615 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,615 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,616 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,616 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,617 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,617 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,621 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,621 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,622 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,622 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,623 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,623 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,624 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,624 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,629 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,629 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,629 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_451,QUANTIFIED] [2021-11-25 19:08:20,630 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,631 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,631 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,631 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,632 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,632 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,632 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,633 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,633 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,634 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,634 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,635 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,635 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,636 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,636 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,637 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,640 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,641 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,641 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,641 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_451,QUANTIFIED] [2021-11-25 19:08:20,641 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,642 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,642 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,642 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,643 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,643 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,643 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,644 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,644 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,644 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,645 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,645 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,645 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,646 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,646 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,646 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,647 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,647 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,647 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,648 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,652 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,652 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,652 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,653 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,653 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,654 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,657 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,657 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,657 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,658 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,658 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,658 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:08:20 BoogieIcfgContainer [2021-11-25 19:08:20,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:08:20,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:08:20,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:08:20,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:08:20,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:06:56" (3/4) ... [2021-11-25 19:08:20,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:08:20,671 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2021-11-25 19:08:20,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-11-25 19:08:20,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-25 19:08:20,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 19:08:20,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:08:20,700 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((last == #memory_$Pointer$[head][head] && 2 <= \old(len)) && \old(data) <= 1) && last <= 0) && head == 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 1 <= \old(data)) && len <= 1) && data == 1) && data <= 1) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && !(head == #memory_$Pointer$[head][head])) && #memory_$Pointer$[head][head] == 0) && #NULL == 0) || ((((((((((((((((2 <= \old(len) && \old(data) <= 1) && last <= 0) && head == 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 1 <= \old(data)) && data == 1) && data <= 1) && head == last) && len == 2) && #NULL == 0) && \valid[last] == 1) && len == len) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2021-11-25 19:08:20,701 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((last == #memory_$Pointer$[head][head] && 2 <= \old(len)) && \old(data) <= 1) && last <= 0) && head == 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && #memory_$Pointer$[s][s] == 0) && 1 <= \old(data)) && len <= 1) && data == 1) && data <= 1) && (forall v_ArrVal_454 : int, v_ArrVal_451 : [int]int :: !(#memory_$Pointer$[#memory_$Pointer$[s][s] := v_ArrVal_451][s][s + 4 := v_ArrVal_454][s] == s))) && len == 2) && #NULL == 0) && 0 <= \result) && 0 <= unknown-#StackHeapBarrier-unknown) && len == i + 1) && !(head == #memory_$Pointer$[head][head])) && #memory_$Pointer$[head][head] == 0) && s == 0) && #NULL == 0) || (((((((((((((((((((((((((((2 <= \old(len) && 2 * len == data + 1) && \old(data) <= 1) && (forall v_ArrVal_456 : int, v_ArrVal_454 : int, v_ArrVal_455 : [int]int :: unknown-#memory_int-unknown[s := v_ArrVal_455][#memory_$Pointer$[s][s + 4 := v_ArrVal_454][s]][#memory_$Pointer$[s][s + 4 := v_ArrVal_456][s] + 4] + 1 <= 2 * len)) && last <= 0) && #memory_$Pointer$[s][s] == head) && len == 2 + i) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && #memory_$Pointer$[s][s] == 0) && 1 <= \old(data)) && (forall v_ArrVal_456 : int, v_ArrVal_454 : int, v_ArrVal_455 : [int]int :: 2 * len <= unknown-#memory_int-unknown[s := v_ArrVal_455][#memory_$Pointer$[s][s + 4 := v_ArrVal_454][s]][#memory_$Pointer$[s][s + 4 := v_ArrVal_456][s] + 4] + 1)) && index <= 0) && len <= 1) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && #memory_$Pointer$[s][s] == head) && 0 <= \result) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && s == 0) && #NULL == 0)) || ((((((((((((((((((((((((((((2 <= \old(len) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 2 * len == unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][#memory_$Pointer$[s][s] + 4] + 1) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && len + i <= unknown-#memory_int-unknown[s][4]) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && 0 <= \result) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) [2021-11-25 19:08:20,701 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((2 <= \old(len) && index <= 0) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && len + i <= unknown-#memory_int-unknown[s][4]) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && 0 <= \result) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && s == 0) && #NULL == 0) || ((((((((((((((((((((((((((((2 <= \old(len) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4] <= len + i) && 0 <= \result) && len + i <= unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4]) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) [2021-11-25 19:08:20,702 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((((((((2 <= \old(len) && 0 <= i + 1) && head <= 0) && \old(data) <= 3) && 0 <= \old(index) + 1) && head == 0) && 1 <= new_data) && \old(data) <= 1) && last <= 0) && #memory_$Pointer$[s][s] == head) && \result <= 0) && index <= 1) && \old(len) <= 2) && data <= 3) && 0 <= last) && 1 <= data) && 0 <= head) && #memory_$Pointer$[s][s] == 0) && 1 <= \old(data)) && len + i == data) && len <= 1) && 1 <= \old(data)) && \old(index) <= 1) && data == 1) && data <= 1) && index + 1 <= i) && head <= 0) && len == 2) && #NULL == 0) && 0 <= head) && 1 <= data) && 0 <= index + 1) && !(head == s)) && 0 <= \result) && i <= 1) && new_data <= 3) && 0 <= unknown-#StackHeapBarrier-unknown) && len == i + 1) && s == 0) && #NULL == 0) || ((((((((((((((((((((((((((((((((((((((((2 <= \old(len) && 0 <= i + 1) && head <= 0) && \old(data) <= 3) && 0 <= \old(index) + 1) && 1 <= new_data) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && index <= 1) && \old(len) <= 2) && data <= 3) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && !(#memory_$Pointer$[s][0] == s)) && 2 * len == unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][#memory_$Pointer$[s][s] + 4] + 1) && 1 <= \old(data)) && len + i == data) && index <= 0) && len <= 1) && 1 <= \old(data)) && \old(index) <= 1) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && 0 <= head) && 1 <= data) && 0 <= index + 1) && 0 <= \result) && i <= 1) && new_data <= 3) && 0 <= unknown-#StackHeapBarrier-unknown) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0)) || (((((((((((((((((((((((((((((((((2 <= \old(len) && head <= 0) && \old(data) <= 3) && 0 <= \old(index) + 1) && 1 <= new_data) && \old(data) <= 1) && head == s) && last <= 0) && head == 0) && \result <= 0) && index <= 1) && \old(len) <= 2) && 0 <= last) && 1 <= data) && s == head) && 1 <= \old(data)) && 1 <= index) && len + i == data) && len <= 1) && 1 <= \old(data)) && \old(index) <= 1) && data == 1) && data <= 1) && len == 2) && #NULL == 0) && 0 <= head) && 0 <= \result) && new_data <= 3) && 0 <= unknown-#StackHeapBarrier-unknown) && !(#memory_$Pointer$[head][head] == head)) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) [2021-11-25 19:08:20,702 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((((((2 <= \old(len) && s == head) && \old(data) <= 1) && head == s) && last <= 0) && len + i == expected) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && index == \old(index)) && head == 0) && head <= 0) && len == 2) && #NULL == 0) && i == \old(index)) && 2 * len == 2 + data) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4] <= len + i) && head == head) && 0 <= \result) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && head == head) && s == 0) && #NULL == 0) && expected <= unknown-#memory_int-unknown[#memory_$Pointer$[head][head]][4]) || ((((((((((((((((((((((((((((((2 <= \old(len) && index <= 0) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 2 == expected) && 1 <= \old(data)) && len + i == data) && index <= 0) && 0 <= i) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && head == 0) && head <= 0) && #NULL == 0) && 2 * len == 2 + data) && 0 <= \result) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && unknown-#memory_int-unknown[head][head + 4] == 2) && s == 0) && #NULL == 0)) || (((((((((((((((((((((((((((((((((2 <= \old(len) && index <= 0) && \old(data) <= 1) && head == s) && last <= 0) && 2 * expected == unknown-#memory_int-unknown[head][head + 4] + 2 * ((expected * -1 + 1) / -2) + 1) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && 0 <= i) && len <= 1) && (expected + 1) % -2 == 0) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4] <= len + i) && 0 <= \result) && len + i <= unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4]) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) [2021-11-25 19:08:20,717 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:08:20,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:08:20,718 INFO L158 Benchmark]: Toolchain (without parser) took 85790.40ms. Allocated memory was 83.9MB in the beginning and 234.9MB in the end (delta: 151.0MB). Free memory was 63.2MB in the beginning and 161.7MB in the end (delta: -98.5MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,718 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 59.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:08:20,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.87ms. Allocated memory is still 83.9MB. Free memory was 62.9MB in the beginning and 52.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.77ms. Allocated memory is still 83.9MB. Free memory was 52.5MB in the beginning and 50.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,719 INFO L158 Benchmark]: Boogie Preprocessor took 32.81ms. Allocated memory is still 83.9MB. Free memory was 50.2MB in the beginning and 48.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,720 INFO L158 Benchmark]: RCFGBuilder took 507.44ms. Allocated memory is still 83.9MB. Free memory was 48.7MB in the beginning and 33.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,720 INFO L158 Benchmark]: TraceAbstraction took 84585.98ms. Allocated memory was 83.9MB in the beginning and 234.9MB in the end (delta: 151.0MB). Free memory was 32.6MB in the beginning and 164.9MB in the end (delta: -132.3MB). Peak memory consumption was 121.9MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,720 INFO L158 Benchmark]: Witness Printer took 55.70ms. Allocated memory is still 234.9MB. Free memory was 164.9MB in the beginning and 161.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:08:20,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 59.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.87ms. Allocated memory is still 83.9MB. Free memory was 62.9MB in the beginning and 52.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.77ms. Allocated memory is still 83.9MB. Free memory was 52.5MB in the beginning and 50.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.81ms. Allocated memory is still 83.9MB. Free memory was 50.2MB in the beginning and 48.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.44ms. Allocated memory is still 83.9MB. Free memory was 48.7MB in the beginning and 33.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 84585.98ms. Allocated memory was 83.9MB in the beginning and 234.9MB in the end (delta: 151.0MB). Free memory was 32.6MB in the beginning and 164.9MB in the end (delta: -132.3MB). Peak memory consumption was 121.9MB. Max. memory is 16.1GB. * Witness Printer took 55.70ms. Allocated memory is still 234.9MB. Free memory was 164.9MB in the beginning and 161.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_451,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_451,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 637]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 84.4s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 508 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 505 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 303 IncrementalHoareTripleChecker+Unchecked, 968 mSDsCounter, 251 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1631 IncrementalHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 251 mSolverCounterUnsat, 139 mSDtfsCounter, 1631 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 747 GetRequests, 461 SyntacticMatches, 10 SemanticMatches, 276 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 56.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=10, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 92 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 16 PreInvPairs, 32 NumberOfFragments, 1795 HoareAnnotationTreeSize, 16 FomulaSimplifications, 3699 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 12 FomulaSimplificationsInter, 10122 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 542 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 684 ConstructedInterpolants, 8 QuantifiedInterpolants, 3569 SizeOfPredicates, 80 NumberOfNonLiveVariables, 3192 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 252/341 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 26, TOOLS_POST_TIME: 0.9s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.9s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.4s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 44, TOOLS_QUANTIFIERELIM_TIME: 2.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 78, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME: 1.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 159, DAG_COMPRESSION_RETAINED_NODES: 56, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 620]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 620]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 598]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 586]: Loop Invariant [2021-11-25 19:08:20,739 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,740 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,740 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,741 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,741 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,741 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((((((((((((last == #memory_$Pointer$[head][head] && 2 <= \old(len)) && \old(data) <= 1) && last <= 0) && head == 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 1 <= \old(data)) && len <= 1) && data == 1) && data <= 1) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && !(head == #memory_$Pointer$[head][head])) && #memory_$Pointer$[head][head] == 0) && #NULL == 0) || ((((((((((((((((2 <= \old(len) && \old(data) <= 1) && last <= 0) && head == 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 1 <= \old(data)) && data == 1) && data <= 1) && head == last) && len == 2) && #NULL == 0) && \valid[last] == 1) && len == len) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 629]: Loop Invariant [2021-11-25 19:08:20,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,743 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,744 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,745 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,745 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((((((((((((((((((((((((2 <= \old(len) && index <= 0) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && len + i <= unknown-#memory_int-unknown[s][4]) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && 0 <= \result) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && s == 0) && #NULL == 0) || ((((((((((((((((((((((((((((2 <= \old(len) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4] <= len + i) && 0 <= \result) && len + i <= unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4]) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) - InvariantResult [Line: 614]: Loop Invariant [2021-11-25 19:08:20,746 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,747 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,748 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,750 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,750 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,751 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,751 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,751 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,752 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,752 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,752 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((2 <= \old(len) && 0 <= i + 1) && head <= 0) && \old(data) <= 3) && 0 <= \old(index) + 1) && head == 0) && 1 <= new_data) && \old(data) <= 1) && last <= 0) && #memory_$Pointer$[s][s] == head) && \result <= 0) && index <= 1) && \old(len) <= 2) && data <= 3) && 0 <= last) && 1 <= data) && 0 <= head) && #memory_$Pointer$[s][s] == 0) && 1 <= \old(data)) && len + i == data) && len <= 1) && 1 <= \old(data)) && \old(index) <= 1) && data == 1) && data <= 1) && index + 1 <= i) && head <= 0) && len == 2) && #NULL == 0) && 0 <= head) && 1 <= data) && 0 <= index + 1) && !(head == s)) && 0 <= \result) && i <= 1) && new_data <= 3) && 0 <= unknown-#StackHeapBarrier-unknown) && len == i + 1) && s == 0) && #NULL == 0) || ((((((((((((((((((((((((((((((((((((((((2 <= \old(len) && 0 <= i + 1) && head <= 0) && \old(data) <= 3) && 0 <= \old(index) + 1) && 1 <= new_data) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && index <= 1) && \old(len) <= 2) && data <= 3) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && !(#memory_$Pointer$[s][0] == s)) && 2 * len == unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][#memory_$Pointer$[s][s] + 4] + 1) && 1 <= \old(data)) && len + i == data) && index <= 0) && len <= 1) && 1 <= \old(data)) && \old(index) <= 1) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && 0 <= head) && 1 <= data) && 0 <= index + 1) && 0 <= \result) && i <= 1) && new_data <= 3) && 0 <= unknown-#StackHeapBarrier-unknown) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0)) || (((((((((((((((((((((((((((((((((2 <= \old(len) && head <= 0) && \old(data) <= 3) && 0 <= \old(index) + 1) && 1 <= new_data) && \old(data) <= 1) && head == s) && last <= 0) && head == 0) && \result <= 0) && index <= 1) && \old(len) <= 2) && 0 <= last) && 1 <= data) && s == head) && 1 <= \old(data)) && 1 <= index) && len + i == data) && len <= 1) && 1 <= \old(data)) && \old(index) <= 1) && data == 1) && data <= 1) && len == 2) && #NULL == 0) && 0 <= head) && 0 <= \result) && new_data <= 3) && 0 <= unknown-#StackHeapBarrier-unknown) && !(#memory_$Pointer$[head][head] == head)) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) - InvariantResult [Line: 625]: Loop Invariant [2021-11-25 19:08:20,754 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,754 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,754 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_451,QUANTIFIED] [2021-11-25 19:08:20,755 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,755 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,755 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,756 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,756 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,757 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,757 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,757 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,757 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,758 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,758 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,758 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,758 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,759 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,759 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,759 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,760 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,761 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,761 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,762 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,762 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_451,QUANTIFIED] [2021-11-25 19:08:20,762 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,762 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,763 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,763 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,764 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,764 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,764 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,765 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_455,QUANTIFIED] [2021-11-25 19:08:20,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,766 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_454,QUANTIFIED] [2021-11-25 19:08:20,766 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,766 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_456,QUANTIFIED] [2021-11-25 19:08:20,766 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,767 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,767 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,767 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((((((((((((((((((((((last == #memory_$Pointer$[head][head] && 2 <= \old(len)) && \old(data) <= 1) && last <= 0) && head == 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && #memory_$Pointer$[s][s] == 0) && 1 <= \old(data)) && len <= 1) && data == 1) && data <= 1) && (forall v_ArrVal_454 : int, v_ArrVal_451 : [int]int :: !(#memory_$Pointer$[#memory_$Pointer$[s][s] := v_ArrVal_451][s][s + 4 := v_ArrVal_454][s] == s))) && len == 2) && #NULL == 0) && 0 <= \result) && 0 <= unknown-#StackHeapBarrier-unknown) && len == i + 1) && !(head == #memory_$Pointer$[head][head])) && #memory_$Pointer$[head][head] == 0) && s == 0) && #NULL == 0) || (((((((((((((((((((((((((((2 <= \old(len) && 2 * len == data + 1) && \old(data) <= 1) && (forall v_ArrVal_456 : int, v_ArrVal_454 : int, v_ArrVal_455 : [int]int :: unknown-#memory_int-unknown[s := v_ArrVal_455][#memory_$Pointer$[s][s + 4 := v_ArrVal_454][s]][#memory_$Pointer$[s][s + 4 := v_ArrVal_456][s] + 4] + 1 <= 2 * len)) && last <= 0) && #memory_$Pointer$[s][s] == head) && len == 2 + i) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && #memory_$Pointer$[s][s] == 0) && 1 <= \old(data)) && (forall v_ArrVal_456 : int, v_ArrVal_454 : int, v_ArrVal_455 : [int]int :: 2 * len <= unknown-#memory_int-unknown[s := v_ArrVal_455][#memory_$Pointer$[s][s + 4 := v_ArrVal_454][s]][#memory_$Pointer$[s][s + 4 := v_ArrVal_456][s] + 4] + 1)) && index <= 0) && len <= 1) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && #memory_$Pointer$[s][s] == head) && 0 <= \result) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && s == 0) && #NULL == 0)) || ((((((((((((((((((((((((((((2 <= \old(len) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 2 * len == unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][#memory_$Pointer$[s][s] + 4] + 1) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && len + i <= unknown-#memory_int-unknown[s][4]) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && 0 <= \result) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) - InvariantResult [Line: 607]: Loop Invariant [2021-11-25 19:08:20,769 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,769 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,769 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,770 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,770 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,770 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 19:08:20,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,772 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,773 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 19:08:20,773 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((((((((((((((((((((((((((((((((((2 <= \old(len) && s == head) && \old(data) <= 1) && head == s) && last <= 0) && len + i == expected) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && index == \old(index)) && head == 0) && head <= 0) && len == 2) && #NULL == 0) && i == \old(index)) && 2 * len == 2 + data) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4] <= len + i) && head == head) && 0 <= \result) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && head == head) && s == 0) && #NULL == 0) && expected <= unknown-#memory_int-unknown[#memory_$Pointer$[head][head]][4]) || ((((((((((((((((((((((((((((((2 <= \old(len) && index <= 0) && \old(data) <= 1) && head == s) && last <= 0) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 2 == expected) && 1 <= \old(data)) && len + i == data) && index <= 0) && 0 <= i) && len <= 1) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && head == 0) && head <= 0) && #NULL == 0) && 2 * len == 2 + data) && 0 <= \result) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && unknown-#memory_int-unknown[head][head + 4] == 2) && s == 0) && #NULL == 0)) || (((((((((((((((((((((((((((((((((2 <= \old(len) && index <= 0) && \old(data) <= 1) && head == s) && last <= 0) && 2 * expected == unknown-#memory_int-unknown[head][head + 4] + 2 * ((expected * -1 + 1) / -2) + 1) && \result <= 0) && \old(len) <= 2) && 0 <= last) && 1 <= data) && 0 <= head) && s == head) && 1 <= \old(data)) && index <= 0) && 0 <= i) && len <= 1) && (expected + 1) % -2 == 0) && unknown-#memory_int-unknown[s][4] <= len) && data == 1) && data <= 1) && head <= 0) && len == 2) && #NULL == 0) && 2 * len == 2 + data) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4] <= len + i) && 0 <= \result) && len + i <= unknown-#memory_int-unknown[#memory_$Pointer$[s][s]][4]) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 * len <= 2 + unknown-#memory_int-unknown[s][4]) && len == i + 1) && #memory_$Pointer$[head][s] == 0) && s == 0) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:08:20,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f344a8-1ea2-4a7a-8e47-ffa1d3256c57/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE