./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW --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 64bit --witnessprinter.graph.data.programhash f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:55:02,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:55:02,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:55:02,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:55:02,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:55:02,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:55:02,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:55:02,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:55:02,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:55:02,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:55:02,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:55:02,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:55:02,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:55:02,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:55:02,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:55:02,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:55:02,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:55:02,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:55:02,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:55:02,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:55:02,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:55:02,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:55:02,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:55:02,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:55:02,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:55:02,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:55:02,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:55:02,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:55:02,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:55:02,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:55:02,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:55:02,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:55:02,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:55:02,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:55:02,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:55:02,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:55:02,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:55:02,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:55:02,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:55:02,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:55:02,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:55:02,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:55:02,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:55:02,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:55:02,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:55:02,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:55:02,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:55:02,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:55:02,666 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:55:02,667 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:55:02,667 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:55:02,667 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:55:02,667 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:55:02,668 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:55:02,668 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:55:02,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:55:02,668 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:55:02,669 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:55:02,669 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:55:02,669 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:55:02,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:55:02,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:55:02,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:55:02,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:55:02,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:55:02,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:55:02,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:55:02,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:55:02,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:55:02,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:55:02,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:55:02,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:02,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:55:02,673 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:55:02,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:55:02,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:55:02,673 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:55:02,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:55:02,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:55:02,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:55:02,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2022-11-23 13:55:02,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:55:02,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:55:02,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:55:02,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:55:02,997 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:55:02,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2022-11-23 13:55:06,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:55:06,797 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:55:06,798 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2022-11-23 13:55:06,856 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/data/cae51f3db/c1fd1c4cd1ea4e17884fcf3f5b4f9eef/FLAG22226cfc3 [2022-11-23 13:55:06,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/data/cae51f3db/c1fd1c4cd1ea4e17884fcf3f5b4f9eef [2022-11-23 13:55:06,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:55:06,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:55:06,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:06,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:55:06,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:55:06,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:06" (1/1) ... [2022-11-23 13:55:06,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595c0272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:06, skipping insertion in model container [2022-11-23 13:55:06,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:06" (1/1) ... [2022-11-23 13:55:06,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:55:07,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:55:10,361 WARN L237 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_44489741-77cb-4d7c-be8a-5c02701c6130/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2022-11-23 13:55:10,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:10,489 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:55:11,251 WARN L237 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_44489741-77cb-4d7c-be8a-5c02701c6130/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2022-11-23 13:55:11,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:11,465 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:55:11,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11 WrapperNode [2022-11-23 13:55:11,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:11,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:11,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:55:11,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:55:11,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:11,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:11,743 INFO L138 Inliner]: procedures = 426, calls = 3460, calls flagged for inlining = 207, calls inlined = 116, statements flattened = 4523 [2022-11-23 13:55:11,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:11,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:55:11,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:55:11,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:55:11,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:11,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:11,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:11,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:11,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:12,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:12,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:12,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:12,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:55:12,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:55:12,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:55:12,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:55:12,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (1/1) ... [2022-11-23 13:55:12,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:12,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:12,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:55:12,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:55:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 13:55:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2022-11-23 13:55:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2022-11-23 13:55:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2022-11-23 13:55:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2022-11-23 13:55:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-23 13:55:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-23 13:55:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:55:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:55:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2022-11-23 13:55:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2022-11-23 13:55:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-23 13:55:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-23 13:55:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2022-11-23 13:55:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2022-11-23 13:55:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:55:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:55:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2022-11-23 13:55:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2022-11-23 13:55:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2022-11-23 13:55:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2022-11-23 13:55:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 13:55:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 13:55:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2022-11-23 13:55:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2022-11-23 13:55:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 13:55:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 13:55:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2022-11-23 13:55:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2022-11-23 13:55:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-23 13:55:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-23 13:55:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 13:55:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 13:55:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:55:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:55:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2022-11-23 13:55:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2022-11-23 13:55:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 13:55:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 13:55:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2022-11-23 13:55:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2022-11-23 13:55:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:55:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-23 13:55:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-23 13:55:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 13:55:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 13:55:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 13:55:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 13:55:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:55:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-23 13:55:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-23 13:55:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 13:55:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 13:55:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 13:55:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 13:55:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:55:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2022-11-23 13:55:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2022-11-23 13:55:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:55:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:55:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:55:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2022-11-23 13:55:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2022-11-23 13:55:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-23 13:55:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-23 13:55:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2022-11-23 13:55:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2022-11-23 13:55:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2022-11-23 13:55:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2022-11-23 13:55:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 13:55:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 13:55:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 13:55:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 13:55:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2022-11-23 13:55:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2022-11-23 13:55:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:55:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2022-11-23 13:55:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2022-11-23 13:55:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:55:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:55:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2022-11-23 13:55:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2022-11-23 13:55:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-23 13:55:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-23 13:55:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-23 13:55:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-23 13:55:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2022-11-23 13:55:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2022-11-23 13:55:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 13:55:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 13:55:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 13:55:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 13:55:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:55:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:55:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 13:55:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 13:55:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:55:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:55:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2022-11-23 13:55:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2022-11-23 13:55:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:55:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:55:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-23 13:55:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-23 13:55:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2022-11-23 13:55:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2022-11-23 13:55:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 13:55:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 13:55:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2022-11-23 13:55:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2022-11-23 13:55:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2022-11-23 13:55:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2022-11-23 13:55:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-23 13:55:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-23 13:55:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-23 13:55:12,217 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-23 13:55:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 13:55:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 13:55:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2022-11-23 13:55:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2022-11-23 13:55:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-11-23 13:55:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-11-23 13:55:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 13:55:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 13:55:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:55:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:55:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:55:12,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:55:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-23 13:55:12,227 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-23 13:55:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 13:55:12,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 13:55:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2022-11-23 13:55:12,227 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2022-11-23 13:55:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2022-11-23 13:55:12,228 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2022-11-23 13:55:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 13:55:12,228 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 13:55:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:55:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 13:55:12,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 13:55:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2022-11-23 13:55:12,229 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2022-11-23 13:55:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:55:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2022-11-23 13:55:12,229 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2022-11-23 13:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-23 13:55:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-23 13:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2022-11-23 13:55:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2022-11-23 13:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-23 13:55:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-23 13:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 13:55:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 13:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 13:55:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 13:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 13:55:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 13:55:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-11-23 13:55:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-11-23 13:55:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 13:55:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 13:55:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2022-11-23 13:55:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2022-11-23 13:55:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 13:55:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 13:55:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 13:55:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 13:55:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:55:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:55:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:55:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-23 13:55:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-23 13:55:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2022-11-23 13:55:12,235 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2022-11-23 13:55:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 13:55:12,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 13:55:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 13:55:12,235 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 13:55:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-23 13:55:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-23 13:55:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 13:55:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 13:55:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 13:55:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 13:55:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 13:55:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 13:55:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:55:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2022-11-23 13:55:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2022-11-23 13:55:13,054 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:55:13,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:55:13,303 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:55:20,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:55:21,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:55:21,437 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 13:55:21,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:21 BoogieIcfgContainer [2022-11-23 13:55:21,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:55:21,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:55:21,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:55:21,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:55:21,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:06" (1/3) ... [2022-11-23 13:55:21,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1cc00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:21, skipping insertion in model container [2022-11-23 13:55:21,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:11" (2/3) ... [2022-11-23 13:55:21,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1cc00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:21, skipping insertion in model container [2022-11-23 13:55:21,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:21" (3/3) ... [2022-11-23 13:55:21,455 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2022-11-23 13:55:21,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:55:21,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:55:21,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:55:21,565 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@464856df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:55:21,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:55:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 1011 states, 652 states have (on average 1.352760736196319) internal successors, (882), 678 states have internal predecessors, (882), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) [2022-11-23 13:55:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:55:21,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:21,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:21,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1754688490, now seen corresponding path program 1 times [2022-11-23 13:55:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:21,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357996233] [2022-11-23 13:55:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:22,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:22,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357996233] [2022-11-23 13:55:22,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357996233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:22,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:22,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:55:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059507535] [2022-11-23 13:55:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:22,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:22,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:22,336 INFO L87 Difference]: Start difference. First operand has 1011 states, 652 states have (on average 1.352760736196319) internal successors, (882), 678 states have internal predecessors, (882), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:55:24,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:27,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:27,844 INFO L93 Difference]: Finished difference Result 2996 states and 4243 transitions. [2022-11-23 13:55:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 13:55:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:27,887 INFO L225 Difference]: With dead ends: 2996 [2022-11-23 13:55:27,887 INFO L226 Difference]: Without dead ends: 1943 [2022-11-23 13:55:27,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:27,914 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 1354 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:27,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2940 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 13:55:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-11-23 13:55:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1937. [2022-11-23 13:55:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1252 states have (on average 1.3306709265175718) internal successors, (1666), 1288 states have internal predecessors, (1666), 517 states have call successors, (517), 168 states have call predecessors, (517), 167 states have return successors, (525), 499 states have call predecessors, (525), 515 states have call successors, (525) [2022-11-23 13:55:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2708 transitions. [2022-11-23 13:55:28,161 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2708 transitions. Word has length 17 [2022-11-23 13:55:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:28,162 INFO L495 AbstractCegarLoop]: Abstraction has 1937 states and 2708 transitions. [2022-11-23 13:55:28,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:55:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2708 transitions. [2022-11-23 13:55:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 13:55:28,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:28,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:55:28,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 974132026, now seen corresponding path program 1 times [2022-11-23 13:55:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:28,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686430359] [2022-11-23 13:55:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 13:55:28,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686430359] [2022-11-23 13:55:28,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686430359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:28,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:28,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:55:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939107470] [2022-11-23 13:55:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:28,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:28,636 INFO L87 Difference]: Start difference. First operand 1937 states and 2708 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 13:55:30,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:32,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:34,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:35,162 INFO L93 Difference]: Finished difference Result 4580 states and 6389 transitions. [2022-11-23 13:55:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-11-23 13:55:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:35,179 INFO L225 Difference]: With dead ends: 4580 [2022-11-23 13:55:35,179 INFO L226 Difference]: Without dead ends: 2644 [2022-11-23 13:55:35,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:35,193 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 513 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:35,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2497 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 13:55:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2022-11-23 13:55:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2636. [2022-11-23 13:55:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1714 states have (on average 1.3413068844807468) internal successors, (2299), 1761 states have internal predecessors, (2299), 683 states have call successors, (683), 239 states have call predecessors, (683), 238 states have return successors, (691), 662 states have call predecessors, (691), 681 states have call successors, (691) [2022-11-23 13:55:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3673 transitions. [2022-11-23 13:55:35,327 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3673 transitions. Word has length 84 [2022-11-23 13:55:35,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:35,328 INFO L495 AbstractCegarLoop]: Abstraction has 2636 states and 3673 transitions. [2022-11-23 13:55:35,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 13:55:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3673 transitions. [2022-11-23 13:55:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 13:55:35,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:35,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:35,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:55:35,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:35,334 INFO L85 PathProgramCache]: Analyzing trace with hash 273052305, now seen corresponding path program 1 times [2022-11-23 13:55:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:35,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931494381] [2022-11-23 13:55:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:35,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:35,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931494381] [2022-11-23 13:55:35,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 13:55:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775329670] [2022-11-23 13:55:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:35,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:35,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:35,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:35,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:55:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:36,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:36,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 13:55:36,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:36,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775329670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:36,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:36,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:55:36,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043967520] [2022-11-23 13:55:36,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:36,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:36,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:36,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:36,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:36,765 INFO L87 Difference]: Start difference. First operand 2636 states and 3673 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 13:55:39,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:42,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:42,305 INFO L93 Difference]: Finished difference Result 6164 states and 8618 transitions. [2022-11-23 13:55:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:42,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-11-23 13:55:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:42,327 INFO L225 Difference]: With dead ends: 6164 [2022-11-23 13:55:42,327 INFO L226 Difference]: Without dead ends: 3529 [2022-11-23 13:55:42,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:42,339 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1160 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:42,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 2777 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 419 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 13:55:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2022-11-23 13:55:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3513. [2022-11-23 13:55:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2316 states have (on average 1.3333333333333333) internal successors, (3088), 2379 states have internal predecessors, (3088), 879 states have call successors, (879), 318 states have call predecessors, (879), 317 states have return successors, (895), 845 states have call predecessors, (895), 877 states have call successors, (895) [2022-11-23 13:55:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4862 transitions. [2022-11-23 13:55:42,499 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4862 transitions. Word has length 91 [2022-11-23 13:55:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:42,501 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4862 transitions. [2022-11-23 13:55:42,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 13:55:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4862 transitions. [2022-11-23 13:55:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 13:55:42,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:42,510 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:42,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 13:55:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:42,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash -97927899, now seen corresponding path program 1 times [2022-11-23 13:55:42,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:42,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434349888] [2022-11-23 13:55:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 13:55:43,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434349888] [2022-11-23 13:55:43,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434349888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:43,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:43,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:55:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275994082] [2022-11-23 13:55:43,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:55:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:55:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:55:43,230 INFO L87 Difference]: Start difference. First operand 3513 states and 4862 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 13:55:45,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:47,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:49,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:51,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:52,083 INFO L93 Difference]: Finished difference Result 7048 states and 9755 transitions. [2022-11-23 13:55:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:55:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-11-23 13:55:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:52,103 INFO L225 Difference]: With dead ends: 7048 [2022-11-23 13:55:52,103 INFO L226 Difference]: Without dead ends: 3530 [2022-11-23 13:55:52,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:55:52,124 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 10 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:52,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3632 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 501 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 13:55:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2022-11-23 13:55:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 3516. [2022-11-23 13:55:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 2319 states have (on average 1.3320396722725312) internal successors, (3089), 2382 states have internal predecessors, (3089), 879 states have call successors, (879), 318 states have call predecessors, (879), 317 states have return successors, (895), 845 states have call predecessors, (895), 877 states have call successors, (895) [2022-11-23 13:55:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4863 transitions. [2022-11-23 13:55:52,291 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4863 transitions. Word has length 144 [2022-11-23 13:55:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:52,291 INFO L495 AbstractCegarLoop]: Abstraction has 3516 states and 4863 transitions. [2022-11-23 13:55:52,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 13:55:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4863 transitions. [2022-11-23 13:55:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 13:55:52,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:52,298 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:52,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:55:52,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -735436272, now seen corresponding path program 1 times [2022-11-23 13:55:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323759342] [2022-11-23 13:55:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 13:55:53,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:53,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323759342] [2022-11-23 13:55:53,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323759342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:53,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:53,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:55:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767885546] [2022-11-23 13:55:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:53,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:55:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:55:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:55:53,203 INFO L87 Difference]: Start difference. First operand 3516 states and 4863 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:55:56,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:59,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:01,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:01,388 INFO L93 Difference]: Finished difference Result 9459 states and 13057 transitions. [2022-11-23 13:56:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:56:01,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2022-11-23 13:56:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:01,419 INFO L225 Difference]: With dead ends: 9459 [2022-11-23 13:56:01,419 INFO L226 Difference]: Without dead ends: 5944 [2022-11-23 13:56:01,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:56:01,436 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 1829 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 220 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:01,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 3845 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 659 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 13:56:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2022-11-23 13:56:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5911. [2022-11-23 13:56:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5911 states, 3881 states have (on average 1.32697758309714) internal successors, (5150), 3995 states have internal predecessors, (5150), 1484 states have call successors, (1484), 546 states have call predecessors, (1484), 545 states have return successors, (1518), 1422 states have call predecessors, (1518), 1482 states have call successors, (1518) [2022-11-23 13:56:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 8152 transitions. [2022-11-23 13:56:01,964 INFO L78 Accepts]: Start accepts. Automaton has 5911 states and 8152 transitions. Word has length 145 [2022-11-23 13:56:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:01,967 INFO L495 AbstractCegarLoop]: Abstraction has 5911 states and 8152 transitions. [2022-11-23 13:56:01,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:56:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5911 states and 8152 transitions. [2022-11-23 13:56:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-23 13:56:01,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:01,976 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:56:01,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1046377014, now seen corresponding path program 1 times [2022-11-23 13:56:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:01,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116303021] [2022-11-23 13:56:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:01,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-23 13:56:04,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:04,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116303021] [2022-11-23 13:56:04,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116303021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:04,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:04,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 13:56:04,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652620474] [2022-11-23 13:56:04,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:04,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:56:04,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:04,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:56:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:56:04,383 INFO L87 Difference]: Start difference. First operand 5911 states and 8152 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 13:56:08,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:11,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:13,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:15,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:17,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:19,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:20,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:22,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:24,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:26,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:28,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:31,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:33,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:34,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:37,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:37,081 INFO L93 Difference]: Finished difference Result 13502 states and 18973 transitions. [2022-11-23 13:56:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 13:56:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) Word has length 169 [2022-11-23 13:56:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:37,126 INFO L225 Difference]: With dead ends: 13502 [2022-11-23 13:56:37,126 INFO L226 Difference]: Without dead ends: 7592 [2022-11-23 13:56:37,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:56:37,155 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 266 mSDsluCounter, 10777 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 12363 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:37,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 12363 Invalid, 1547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1543 Invalid, 4 Unknown, 0 Unchecked, 32.3s Time] [2022-11-23 13:56:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-11-23 13:56:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 5935. [2022-11-23 13:56:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5935 states, 3896 states have (on average 1.3257186858316221) internal successors, (5165), 4010 states have internal predecessors, (5165), 1484 states have call successors, (1484), 546 states have call predecessors, (1484), 554 states have return successors, (1554), 1431 states have call predecessors, (1554), 1482 states have call successors, (1554) [2022-11-23 13:56:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5935 states to 5935 states and 8203 transitions. [2022-11-23 13:56:37,527 INFO L78 Accepts]: Start accepts. Automaton has 5935 states and 8203 transitions. Word has length 169 [2022-11-23 13:56:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:37,527 INFO L495 AbstractCegarLoop]: Abstraction has 5935 states and 8203 transitions. [2022-11-23 13:56:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 13:56:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5935 states and 8203 transitions. [2022-11-23 13:56:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-23 13:56:37,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:37,535 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:37,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:56:37,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2016249771, now seen corresponding path program 1 times [2022-11-23 13:56:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:37,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595139283] [2022-11-23 13:56:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-23 13:56:38,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595139283] [2022-11-23 13:56:38,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595139283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:38,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:38,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:56:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388000863] [2022-11-23 13:56:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:56:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:56:38,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:56:38,832 INFO L87 Difference]: Start difference. First operand 5935 states and 8203 transitions. Second operand has 6 states, 4 states have (on average 20.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 13:56:42,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:45,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:45,306 INFO L93 Difference]: Finished difference Result 11959 states and 16567 transitions. [2022-11-23 13:56:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:56:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 20.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 183 [2022-11-23 13:56:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:45,355 INFO L225 Difference]: With dead ends: 11959 [2022-11-23 13:56:45,355 INFO L226 Difference]: Without dead ends: 6025 [2022-11-23 13:56:45,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:56:45,380 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 8 mSDsluCounter, 4784 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5988 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:45,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5988 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 909 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 13:56:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6025 states. [2022-11-23 13:56:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6025 to 6007. [2022-11-23 13:56:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6007 states, 3941 states have (on average 1.3265668612027404) internal successors, (5228), 4055 states have internal predecessors, (5228), 1493 states have call successors, (1493), 564 states have call predecessors, (1493), 572 states have return successors, (1563), 1440 states have call predecessors, (1563), 1491 states have call successors, (1563) [2022-11-23 13:56:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 8284 transitions. [2022-11-23 13:56:45,765 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 8284 transitions. Word has length 183 [2022-11-23 13:56:45,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:45,766 INFO L495 AbstractCegarLoop]: Abstraction has 6007 states and 8284 transitions. [2022-11-23 13:56:45,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 20.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 13:56:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 8284 transitions. [2022-11-23 13:56:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-23 13:56:45,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:45,782 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:56:45,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1168285852, now seen corresponding path program 1 times [2022-11-23 13:56:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:45,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632733402] [2022-11-23 13:56:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-23 13:56:47,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:47,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632733402] [2022-11-23 13:56:47,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632733402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:56:47,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636702645] [2022-11-23 13:56:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:47,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:56:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:56:47,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:56:47,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:56:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:48,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 3820 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 13:56:48,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:56:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-23 13:56:48,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:56:48,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636702645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:48,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:56:48,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-23 13:56:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761194425] [2022-11-23 13:56:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:48,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:56:48,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:56:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:56:48,512 INFO L87 Difference]: Start difference. First operand 6007 states and 8284 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-23 13:56:51,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:54,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:54,172 INFO L93 Difference]: Finished difference Result 12051 states and 16621 transitions. [2022-11-23 13:56:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:56:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 184 [2022-11-23 13:56:54,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:54,200 INFO L225 Difference]: With dead ends: 12051 [2022-11-23 13:56:54,200 INFO L226 Difference]: Without dead ends: 6033 [2022-11-23 13:56:54,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 13:56:54,225 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 14 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:54,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3633 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 498 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 13:56:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2022-11-23 13:56:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 6001. [2022-11-23 13:56:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6001 states, 3935 states have (on average 1.3245235069885641) internal successors, (5212), 4049 states have internal predecessors, (5212), 1493 states have call successors, (1493), 564 states have call predecessors, (1493), 572 states have return successors, (1563), 1440 states have call predecessors, (1563), 1491 states have call successors, (1563) [2022-11-23 13:56:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6001 states to 6001 states and 8268 transitions. [2022-11-23 13:56:54,534 INFO L78 Accepts]: Start accepts. Automaton has 6001 states and 8268 transitions. Word has length 184 [2022-11-23 13:56:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:54,535 INFO L495 AbstractCegarLoop]: Abstraction has 6001 states and 8268 transitions. [2022-11-23 13:56:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-23 13:56:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6001 states and 8268 transitions. [2022-11-23 13:56:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-23 13:56:54,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:54,544 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:54,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:56:54,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 13:56:54,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash -728526464, now seen corresponding path program 1 times [2022-11-23 13:56:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:54,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860919428] [2022-11-23 13:56:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:54,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-23 13:56:56,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:56,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860919428] [2022-11-23 13:56:56,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860919428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:56,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:56,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:56:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645022453] [2022-11-23 13:56:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:56:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:56:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:56:56,185 INFO L87 Difference]: Start difference. First operand 6001 states and 8268 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 13:56:59,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:03,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:03,474 INFO L93 Difference]: Finished difference Result 14159 states and 19805 transitions. [2022-11-23 13:57:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:57:03,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 202 [2022-11-23 13:57:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:03,510 INFO L225 Difference]: With dead ends: 14159 [2022-11-23 13:57:03,510 INFO L226 Difference]: Without dead ends: 8159 [2022-11-23 13:57:03,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-23 13:57:03,537 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 594 mSDsluCounter, 7383 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 8936 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:03,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 8936 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1131 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 13:57:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2022-11-23 13:57:03,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 6388. [2022-11-23 13:57:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 4188 states have (on average 1.319484240687679) internal successors, (5526), 4302 states have internal predecessors, (5526), 1558 states have call successors, (1558), 624 states have call predecessors, (1558), 641 states have return successors, (1637), 1515 states have call predecessors, (1637), 1556 states have call successors, (1637) [2022-11-23 13:57:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 8721 transitions. [2022-11-23 13:57:03,931 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 8721 transitions. Word has length 202 [2022-11-23 13:57:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:03,932 INFO L495 AbstractCegarLoop]: Abstraction has 6388 states and 8721 transitions. [2022-11-23 13:57:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 13:57:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 8721 transitions. [2022-11-23 13:57:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-23 13:57:03,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:03,943 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:57:03,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:57:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1249826970, now seen corresponding path program 1 times [2022-11-23 13:57:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:03,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833388538] [2022-11-23 13:57:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-23 13:57:05,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:05,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833388538] [2022-11-23 13:57:05,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833388538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:05,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130756889] [2022-11-23 13:57:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:05,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:05,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:05,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:05,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44489741-77cb-4d7c-be8a-5c02701c6130/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:57:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:07,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 3940 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 13:57:07,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-23 13:57:07,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-23 13:57:08,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130756889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:08,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1240857204] [2022-11-23 13:57:08,547 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2022-11-23 13:57:08,548 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:57:08,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:57:08,558 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:57:08,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:57:15,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 385 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 360 [2022-11-23 13:57:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:15,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 379 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 335 [2022-11-23 13:57:16,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 36 select indices, 36 select index equivalence classes, 666 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 0 case distinctions, treesize of input 1046 treesize of output 935 [2022-11-23 13:57:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:18,710 INFO L217 Elim1Store]: Index analysis took 123 ms [2022-11-23 13:57:18,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 382 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 351 [2022-11-23 13:57:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 379 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 335 [2022-11-23 13:57:19,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:19,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:57:20,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 379 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 335 [2022-11-23 13:58:08,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 13:58:08,087 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7