./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-43_2a-drivers--net--irda--vlsi_ir.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_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/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_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/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_39c51115-f393-4640-b5bc-5382aef79aba/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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- 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 14:27:23,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:27:23,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:27:23,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:27:23,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:27:23,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:27:23,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:27:23,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:27:23,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:27:23,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:27:23,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:27:23,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:27:23,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:27:23,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:27:23,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:27:23,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:27:23,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:27:23,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:27:23,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:27:23,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:27:23,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:27:23,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:27:23,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:27:23,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:27:23,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:27:23,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:27:23,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:27:23,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:27:23,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:27:23,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:27:23,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:27:23,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:27:23,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:27:23,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:27:23,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:27:23,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:27:23,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:27:23,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:27:23,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:27:23,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:27:23,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:27:23,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:27:24,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:27:24,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:27:24,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:27:24,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:27:24,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:27:24,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:27:24,013 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:27:24,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:27:24,013 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:27:24,014 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:27:24,015 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:27:24,015 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:27:24,016 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:27:24,016 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:27:24,016 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:27:24,016 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:27:24,017 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:27:24,017 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:27:24,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:27:24,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:27:24,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:27:24,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:27:24,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:27:24,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:27:24,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:27:24,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:27:24,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:27:24,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:27:24,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:27:24,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:24,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:27:24,021 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:27:24,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:27:24,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:27:24,022 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:27:24,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:27:24,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:27:24,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:27:24,023 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_39c51115-f393-4640-b5bc-5382aef79aba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2022-11-23 14:27:24,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:27:24,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:27:24,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:27:24,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:27:24,378 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:27:24,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-23 14:27:27,453 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:27:28,117 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:27:28,117 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-23 14:27:28,158 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/data/5f7741991/d9f9bf4657fb4962b6b966447c250c94/FLAGbcd7ec25d [2022-11-23 14:27:28,173 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/data/5f7741991/d9f9bf4657fb4962b6b966447c250c94 [2022-11-23 14:27:28,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:27:28,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:27:28,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:28,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:27:28,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:27:28,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:28" (1/1) ... [2022-11-23 14:27:28,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6750ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28, skipping insertion in model container [2022-11-23 14:27:28,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:28" (1/1) ... [2022-11-23 14:27:28,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:27:28,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:27:30,706 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_39c51115-f393-4640-b5bc-5382aef79aba/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-11-23 14:27:30,770 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 14:27:30,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:30,839 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:27:31,176 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_39c51115-f393-4640-b5bc-5382aef79aba/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-11-23 14:27:31,180 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 14:27:31,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:31,263 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:27:31,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31 WrapperNode [2022-11-23 14:27:31,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:31,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:27:31,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:27:31,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:27:31,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,634 INFO L138 Inliner]: procedures = 275, calls = 2222, calls flagged for inlining = 131, calls inlined = 123, statements flattened = 4838 [2022-11-23 14:27:31,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:27:31,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:27:31,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:27:31,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:27:31,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,836 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:27:31,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:27:31,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:27:31,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:27:31,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (1/1) ... [2022-11-23 14:27:31,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:27:31,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:27:31,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:27:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 14:27:31,976 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 14:27:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2022-11-23 14:27:31,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2022-11-23 14:27:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:27:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:27:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 14:27:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 14:27:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:27:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:27:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:27:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:27:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 14:27:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 14:27:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 14:27:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 14:27:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-11-23 14:27:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-11-23 14:27:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:27:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:27:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-23 14:27:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-23 14:27:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-11-23 14:27:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-11-23 14:27:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 14:27:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 14:27:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-11-23 14:27:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-11-23 14:27:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-23 14:27:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-23 14:27:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:27:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:27:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:27:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:27:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-11-23 14:27:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-11-23 14:27:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:27:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:27:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:27:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:27:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:27:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:27:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:27:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:27:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:27:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:27:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 14:27:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 14:27:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-23 14:27:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-23 14:27:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-11-23 14:27:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-11-23 14:27:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-23 14:27:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-23 14:27:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:27:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-11-23 14:27:31,988 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-11-23 14:27:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 14:27:31,988 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 14:27:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:27:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 14:27:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 14:27:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:27:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-23 14:27:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-23 14:27:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2022-11-23 14:27:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2022-11-23 14:27:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:27:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:27:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-11-23 14:27:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-11-23 14:27:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-11-23 14:27:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-11-23 14:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:27:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-11-23 14:27:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-11-23 14:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-23 14:27:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-23 14:27:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:27:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 14:27:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 14:27:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-23 14:27:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-23 14:27:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:27:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:27:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-11-23 14:27:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-11-23 14:27:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-23 14:27:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-23 14:27:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 14:27:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 14:27:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:27:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:27:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 14:27:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 14:27:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:27:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:27:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-11-23 14:27:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-11-23 14:27:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:27:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-11-23 14:27:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-11-23 14:27:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:27:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:27:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:27:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-11-23 14:27:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-11-23 14:27:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-11-23 14:27:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-11-23 14:27:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:27:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:27:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:27:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-11-23 14:27:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-11-23 14:27:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:27:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:27:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-23 14:27:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-23 14:27:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-11-23 14:27:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-11-23 14:27:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:27:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:27:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:27:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:27:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-23 14:27:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-23 14:27:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:27:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:27:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-11-23 14:27:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-11-23 14:27:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:27:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:27:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:27:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:27:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:27:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-23 14:27:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-23 14:27:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-11-23 14:27:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-11-23 14:27:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-23 14:27:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-23 14:27:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:27:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:27:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-11-23 14:27:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-11-23 14:27:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-11-23 14:27:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-11-23 14:27:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:27:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:27:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:27:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-11-23 14:27:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-11-23 14:27:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:27:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:27:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 14:27:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 14:27:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:27:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:27:32,019 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:27:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:27:32,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:27:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:27:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:27:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-11-23 14:27:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-11-23 14:27:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 14:27:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 14:27:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2022-11-23 14:27:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2022-11-23 14:27:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2022-11-23 14:27:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2022-11-23 14:27:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 14:27:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 14:27:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-11-23 14:27:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-11-23 14:27:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-11-23 14:27:32,022 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-11-23 14:27:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 14:27:32,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 14:27:32,023 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-11-23 14:27:32,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-11-23 14:27:32,023 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 14:27:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 14:27:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-11-23 14:27:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-11-23 14:27:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:27:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-11-23 14:27:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-11-23 14:27:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-23 14:27:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-23 14:27:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-11-23 14:27:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-11-23 14:27:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-23 14:27:32,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-23 14:27:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:27:32,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:27:33,010 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:27:33,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:27:33,440 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:27:42,361 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:27:43,755 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:27:43,755 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:27:43,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:43 BoogieIcfgContainer [2022-11-23 14:27:43,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:27:43,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:27:43,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:27:43,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:27:43,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:27:28" (1/3) ... [2022-11-23 14:27:43,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0bfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:27:43, skipping insertion in model container [2022-11-23 14:27:43,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:31" (2/3) ... [2022-11-23 14:27:43,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0bfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:27:43, skipping insertion in model container [2022-11-23 14:27:43,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:43" (3/3) ... [2022-11-23 14:27:43,774 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-23 14:27:43,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:27:43,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:27:43,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:27:43,884 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;@6f650045, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:27:43,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:27:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) [2022-11-23 14:27:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 14:27:43,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:43,915 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:43,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1405935073, now seen corresponding path program 1 times [2022-11-23 14:27:43,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:43,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663560723] [2022-11-23 14:27:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-23 14:27:45,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:45,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663560723] [2022-11-23 14:27:45,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663560723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:45,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:45,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:27:45,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127523959] [2022-11-23 14:27:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:45,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:27:45,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:27:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:27:45,134 INFO L87 Difference]: Start difference. First operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:27:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:50,026 INFO L93 Difference]: Finished difference Result 3236 states and 4636 transitions. [2022-11-23 14:27:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:50,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-11-23 14:27:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:50,056 INFO L225 Difference]: With dead ends: 3236 [2022-11-23 14:27:50,057 INFO L226 Difference]: Without dead ends: 2002 [2022-11-23 14:27:50,073 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 14:27:50,076 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 1180 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:50,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 3263 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 14:27:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-23 14:27:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1998. [2022-11-23 14:27:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1189 states have (on average 1.2775441547518924) internal successors, (1519), 1214 states have internal predecessors, (1519), 650 states have call successors, (650), 159 states have call predecessors, (650), 158 states have return successors, (653), 646 states have call predecessors, (653), 649 states have call successors, (653) [2022-11-23 14:27:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2822 transitions. [2022-11-23 14:27:50,301 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2822 transitions. Word has length 131 [2022-11-23 14:27:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:50,303 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 2822 transitions. [2022-11-23 14:27:50,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:27:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2822 transitions. [2022-11-23 14:27:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-23 14:27:50,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:50,326 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-23 14:27:50,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:27:50,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2119672659, now seen corresponding path program 1 times [2022-11-23 14:27:50,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228876386] [2022-11-23 14:27:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:27:51,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:51,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228876386] [2022-11-23 14:27:51,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228876386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:51,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:51,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:51,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295276371] [2022-11-23 14:27:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:51,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:51,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:51,474 INFO L87 Difference]: Start difference. First operand 1998 states and 2822 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:27:53,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:55,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:57,083 WARN L539 Checker$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 14:28:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:04,691 INFO L93 Difference]: Finished difference Result 5852 states and 8264 transitions. [2022-11-23 14:28:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:28:04,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 186 [2022-11-23 14:28:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:04,721 INFO L225 Difference]: With dead ends: 5852 [2022-11-23 14:28:04,721 INFO L226 Difference]: Without dead ends: 3882 [2022-11-23 14:28:04,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:28:04,734 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 1542 mSDsluCounter, 5285 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:04,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 7193 Invalid, 878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 873 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2022-11-23 14:28:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-11-23 14:28:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3866. [2022-11-23 14:28:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2304 states have (on average 1.2786458333333333) internal successors, (2946), 2354 states have internal predecessors, (2946), 1249 states have call successors, (1249), 313 states have call predecessors, (1249), 312 states have return successors, (1256), 1241 states have call predecessors, (1256), 1248 states have call successors, (1256) [2022-11-23 14:28:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5451 transitions. [2022-11-23 14:28:04,949 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5451 transitions. Word has length 186 [2022-11-23 14:28:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:04,950 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5451 transitions. [2022-11-23 14:28:04,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5451 transitions. [2022-11-23 14:28:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-23 14:28:04,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:04,956 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-23 14:28:04,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:28:04,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1037190000, now seen corresponding path program 1 times [2022-11-23 14:28:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:04,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980767269] [2022-11-23 14:28:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:04,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:28:05,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980767269] [2022-11-23 14:28:05,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980767269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:05,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:05,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:28:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509943357] [2022-11-23 14:28:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:28:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:05,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:28:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:28:05,718 INFO L87 Difference]: Start difference. First operand 3866 states and 5451 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:07,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:11,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:16,428 INFO L93 Difference]: Finished difference Result 7730 states and 10899 transitions. [2022-11-23 14:28:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:28:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2022-11-23 14:28:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:16,460 INFO L225 Difference]: With dead ends: 7730 [2022-11-23 14:28:16,460 INFO L226 Difference]: Without dead ends: 3892 [2022-11-23 14:28:16,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:28:16,484 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 1539 mSDsluCounter, 5285 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:16,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 7193 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 872 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-23 14:28:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2022-11-23 14:28:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3876. [2022-11-23 14:28:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 2312 states have (on average 1.277681660899654) internal successors, (2954), 2362 states have internal predecessors, (2954), 1249 states have call successors, (1249), 315 states have call predecessors, (1249), 314 states have return successors, (1256), 1241 states have call predecessors, (1256), 1248 states have call successors, (1256) [2022-11-23 14:28:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 5459 transitions. [2022-11-23 14:28:16,741 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 5459 transitions. Word has length 188 [2022-11-23 14:28:16,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:16,742 INFO L495 AbstractCegarLoop]: Abstraction has 3876 states and 5459 transitions. [2022-11-23 14:28:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 5459 transitions. [2022-11-23 14:28:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-23 14:28:16,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:16,750 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-23 14:28:16,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:28:16,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1594095616, now seen corresponding path program 1 times [2022-11-23 14:28:16,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:16,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408430883] [2022-11-23 14:28:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:16,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:28:17,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:17,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408430883] [2022-11-23 14:28:17,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408430883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:17,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:17,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:28:17,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872773303] [2022-11-23 14:28:17,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:17,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:28:17,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:28:17,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:28:17,536 INFO L87 Difference]: Start difference. First operand 3876 states and 5459 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:18,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:27,673 INFO L93 Difference]: Finished difference Result 9634 states and 13558 transitions. [2022-11-23 14:28:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:28:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2022-11-23 14:28:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:27,711 INFO L225 Difference]: With dead ends: 9634 [2022-11-23 14:28:27,711 INFO L226 Difference]: Without dead ends: 5786 [2022-11-23 14:28:27,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:28:27,733 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 1544 mSDsluCounter, 5287 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 7195 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:27,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 7195 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-23 14:28:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-11-23 14:28:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5732. [2022-11-23 14:28:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 3419 states have (on average 1.2790289558350394) internal successors, (4373), 3498 states have internal predecessors, (4373), 1844 states have call successors, (1844), 469 states have call predecessors, (1844), 468 states have return successors, (1855), 1828 states have call predecessors, (1855), 1843 states have call successors, (1855) [2022-11-23 14:28:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 8072 transitions. [2022-11-23 14:28:28,062 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 8072 transitions. Word has length 185 [2022-11-23 14:28:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 5732 states and 8072 transitions. [2022-11-23 14:28:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 8072 transitions. [2022-11-23 14:28:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-23 14:28:28,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:28,070 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-23 14:28:28,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:28:28,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash -305175133, now seen corresponding path program 1 times [2022-11-23 14:28:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:28,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364170012] [2022-11-23 14:28:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:28:28,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364170012] [2022-11-23 14:28:28,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364170012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:28,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:28,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:28:28,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301685693] [2022-11-23 14:28:28,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:28,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:28:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:28:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:28:28,713 INFO L87 Difference]: Start difference. First operand 5732 states and 8072 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:30,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:35,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:40,549 INFO L93 Difference]: Finished difference Result 10104 states and 14123 transitions. [2022-11-23 14:28:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:28:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2022-11-23 14:28:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:40,584 INFO L225 Difference]: With dead ends: 10104 [2022-11-23 14:28:40,585 INFO L226 Difference]: Without dead ends: 5568 [2022-11-23 14:28:40,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:28:40,606 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 1539 mSDsluCounter, 5285 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:40,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 7193 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 872 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-11-23 14:28:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-11-23 14:28:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5540. [2022-11-23 14:28:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 3306 states have (on average 1.2770719903206291) internal successors, (4222), 3375 states have internal predecessors, (4222), 1769 states have call successors, (1769), 465 states have call predecessors, (1769), 464 states have return successors, (1780), 1757 states have call predecessors, (1780), 1768 states have call successors, (1780) [2022-11-23 14:28:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 7771 transitions. [2022-11-23 14:28:41,031 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 7771 transitions. Word has length 187 [2022-11-23 14:28:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:41,033 INFO L495 AbstractCegarLoop]: Abstraction has 5540 states and 7771 transitions. [2022-11-23 14:28:41,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 14:28:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 7771 transitions. [2022-11-23 14:28:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-23 14:28:41,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:41,042 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:28:41,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1948309477, now seen corresponding path program 1 times [2022-11-23 14:28:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:41,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139724740] [2022-11-23 14:28:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 14:28:42,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:42,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139724740] [2022-11-23 14:28:42,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139724740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:28:42,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148923880] [2022-11-23 14:28:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:42,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:42,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:28:42,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:28:42,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:28:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:43,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 4196 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:28:43,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:28:43,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:28:43,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148923880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:43,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:28:43,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-23 14:28:43,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420187486] [2022-11-23 14:28:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:28:43,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:28:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:28:43,716 INFO L87 Difference]: Start difference. First operand 5540 states and 7771 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:00,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:02,537 INFO L93 Difference]: Finished difference Result 13006 states and 18244 transitions. [2022-11-23 14:29:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:29:02,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 198 [2022-11-23 14:29:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:02,584 INFO L225 Difference]: With dead ends: 13006 [2022-11-23 14:29:02,584 INFO L226 Difference]: Without dead ends: 9148 [2022-11-23 14:29:02,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:29:02,604 INFO L413 NwaCegarLoop]: 2165 mSDtfsCounter, 1580 mSDsluCounter, 10138 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 12303 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:02,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 12303 Invalid, 1672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2022-11-23 14:29:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9148 states. [2022-11-23 14:29:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9148 to 9086. [2022-11-23 14:29:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 5427 states have (on average 1.2782384374424176) internal successors, (6937), 5548 states have internal predecessors, (6937), 2888 states have call successors, (2888), 767 states have call predecessors, (2888), 770 states have return successors, (2917), 2864 states have call predecessors, (2917), 2887 states have call successors, (2917) [2022-11-23 14:29:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12742 transitions. [2022-11-23 14:29:03,218 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12742 transitions. Word has length 198 [2022-11-23 14:29:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:03,219 INFO L495 AbstractCegarLoop]: Abstraction has 9086 states and 12742 transitions. [2022-11-23 14:29:03,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12742 transitions. [2022-11-23 14:29:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-23 14:29:03,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:03,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:03,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:29:03,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:03,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:03,442 INFO L85 PathProgramCache]: Analyzing trace with hash 208716499, now seen corresponding path program 1 times [2022-11-23 14:29:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:03,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453885928] [2022-11-23 14:29:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:29:04,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453885928] [2022-11-23 14:29:04,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453885928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:29:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127487163] [2022-11-23 14:29:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:04,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:29:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:29:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:05,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 4198 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:29:05,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:29:05,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:05,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127487163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:05,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:29:05,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-23 14:29:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115306129] [2022-11-23 14:29:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:05,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:29:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:29:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:29:05,698 INFO L87 Difference]: Start difference. First operand 9086 states and 12742 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:07,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:16,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:22,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:28,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:29,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:29,367 INFO L93 Difference]: Finished difference Result 20120 states and 28206 transitions. [2022-11-23 14:29:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:29:29,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2022-11-23 14:29:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:29,425 INFO L225 Difference]: With dead ends: 20120 [2022-11-23 14:29:29,425 INFO L226 Difference]: Without dead ends: 12716 [2022-11-23 14:29:29,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:29:29,459 INFO L413 NwaCegarLoop]: 2842 mSDtfsCounter, 1539 mSDsluCounter, 12856 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15698 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:29,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 15698 Invalid, 2234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2232 Invalid, 1 Unknown, 0 Unchecked, 23.0s Time] [2022-11-23 14:29:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2022-11-23 14:29:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12642. [2022-11-23 14:29:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12642 states, 7554 states have (on average 1.2785279322213396) internal successors, (9658), 7733 states have internal predecessors, (9658), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3969 states have call predecessors, (4060), 4006 states have call successors, (4060) [2022-11-23 14:29:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12642 states to 12642 states and 17725 transitions. [2022-11-23 14:29:30,327 INFO L78 Accepts]: Start accepts. Automaton has 12642 states and 17725 transitions. Word has length 199 [2022-11-23 14:29:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:30,328 INFO L495 AbstractCegarLoop]: Abstraction has 12642 states and 17725 transitions. [2022-11-23 14:29:30,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12642 states and 17725 transitions. [2022-11-23 14:29:30,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-23 14:29:30,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:30,339 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:30,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:29:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 14:29:30,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1372235746, now seen corresponding path program 1 times [2022-11-23 14:29:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:30,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823897028] [2022-11-23 14:29:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:29:31,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823897028] [2022-11-23 14:29:31,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823897028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:29:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125027902] [2022-11-23 14:29:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:31,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:31,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:29:31,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:29:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 4200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:29:32,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:29:32,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:32,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125027902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:32,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:29:32,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-23 14:29:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153647763] [2022-11-23 14:29:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:32,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:29:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:29:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:29:32,820 INFO L87 Difference]: Start difference. First operand 12642 states and 17725 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:35,582 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 14:29:44,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:48,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:50,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:51,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:53,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:54,240 INFO L93 Difference]: Finished difference Result 27228 states and 38164 transitions. [2022-11-23 14:29:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:29:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2022-11-23 14:29:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:54,307 INFO L225 Difference]: With dead ends: 27228 [2022-11-23 14:29:54,307 INFO L226 Difference]: Without dead ends: 16268 [2022-11-23 14:29:54,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:29:54,343 INFO L413 NwaCegarLoop]: 2174 mSDtfsCounter, 1580 mSDsluCounter, 10162 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 12336 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:54,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 12336 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1676 Invalid, 1 Unknown, 0 Unchecked, 20.6s Time] [2022-11-23 14:29:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16268 states. [2022-11-23 14:29:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16268 to 12644. [2022-11-23 14:29:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12644 states, 7556 states have (on average 1.278454208575966) internal successors, (9660), 7733 states have internal predecessors, (9660), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3971 states have call predecessors, (4060), 4006 states have call successors, (4060) [2022-11-23 14:29:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12644 states to 12644 states and 17727 transitions. [2022-11-23 14:29:55,020 INFO L78 Accepts]: Start accepts. Automaton has 12644 states and 17727 transitions. Word has length 200 [2022-11-23 14:29:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:55,021 INFO L495 AbstractCegarLoop]: Abstraction has 12644 states and 17727 transitions. [2022-11-23 14:29:55,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12644 states and 17727 transitions. [2022-11-23 14:29:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-23 14:29:55,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:55,032 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:55,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:29:55,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 14:29:55,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:29:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1801817466, now seen corresponding path program 1 times [2022-11-23 14:29:55,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:55,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132690664] [2022-11-23 14:29:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:55,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:29:56,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:56,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132690664] [2022-11-23 14:29:56,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132690664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:29:56,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459771951] [2022-11-23 14:29:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:56,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:56,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:56,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:29:56,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:29:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:57,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 4202 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:29:57,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-23 14:29:57,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:57,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459771951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:57,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:29:57,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-23 14:29:57,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373925265] [2022-11-23 14:29:57,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:57,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:29:57,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:29:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:29:57,628 INFO L87 Difference]: Start difference. First operand 12644 states and 17727 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:29:59,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:12,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:23,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:23,752 INFO L93 Difference]: Finished difference Result 27234 states and 38170 transitions. [2022-11-23 14:30:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:30:23,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 201 [2022-11-23 14:30:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:23,828 INFO L225 Difference]: With dead ends: 27234 [2022-11-23 14:30:23,829 INFO L226 Difference]: Without dead ends: 16272 [2022-11-23 14:30:23,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:30:23,865 INFO L413 NwaCegarLoop]: 2842 mSDtfsCounter, 1539 mSDsluCounter, 12856 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15698 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:23,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 15698 Invalid, 2234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2232 Invalid, 1 Unknown, 0 Unchecked, 25.3s Time] [2022-11-23 14:30:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2022-11-23 14:30:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 12646. [2022-11-23 14:30:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12646 states, 7558 states have (on average 1.2783805239481345) internal successors, (9662), 7733 states have internal predecessors, (9662), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3973 states have call predecessors, (4060), 4006 states have call successors, (4060) [2022-11-23 14:30:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12646 states to 12646 states and 17729 transitions. [2022-11-23 14:30:24,540 INFO L78 Accepts]: Start accepts. Automaton has 12646 states and 17729 transitions. Word has length 201 [2022-11-23 14:30:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:24,541 INFO L495 AbstractCegarLoop]: Abstraction has 12646 states and 17729 transitions. [2022-11-23 14:30:24,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:30:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12646 states and 17729 transitions. [2022-11-23 14:30:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-23 14:30:24,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:24,554 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:30:24,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:30:24,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:24,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 305637844, now seen corresponding path program 1 times [2022-11-23 14:30:24,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:24,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249904072] [2022-11-23 14:30:24,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:24,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-23 14:30:25,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:25,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249904072] [2022-11-23 14:30:25,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249904072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:25,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:25,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240718554] [2022-11-23 14:30:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:30:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:30:25,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:30:25,120 INFO L87 Difference]: Start difference. First operand 12646 states and 17729 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:30:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:31,125 INFO L93 Difference]: Finished difference Result 32990 states and 46057 transitions. [2022-11-23 14:30:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:30:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2022-11-23 14:30:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:31,190 INFO L225 Difference]: With dead ends: 32990 [2022-11-23 14:30:31,190 INFO L226 Difference]: Without dead ends: 20372 [2022-11-23 14:30:31,224 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 14:30:31,224 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 1370 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:31,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 3755 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 14:30:31,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20372 states. [2022-11-23 14:30:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20372 to 20355. [2022-11-23 14:30:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20355 states, 12168 states have (on average 1.2765450361604207) internal successors, (15533), 12491 states have internal predecessors, (15533), 6362 states have call successors, (6362), 1801 states have call predecessors, (6362), 1824 states have return successors, (6441), 6288 states have call predecessors, (6441), 6361 states have call successors, (6441) [2022-11-23 14:30:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20355 states to 20355 states and 28336 transitions. [2022-11-23 14:30:32,231 INFO L78 Accepts]: Start accepts. Automaton has 20355 states and 28336 transitions. Word has length 201 [2022-11-23 14:30:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:32,233 INFO L495 AbstractCegarLoop]: Abstraction has 20355 states and 28336 transitions. [2022-11-23 14:30:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:30:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 20355 states and 28336 transitions. [2022-11-23 14:30:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-23 14:30:32,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:32,243 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:30:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:30:32,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1069118344, now seen corresponding path program 1 times [2022-11-23 14:30:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:32,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738322533] [2022-11-23 14:30:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-23 14:30:33,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:33,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738322533] [2022-11-23 14:30:33,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738322533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:30:33,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767936373] [2022-11-23 14:30:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:33,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:30:33,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:30:33,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:30:33,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c51115-f393-4640-b5bc-5382aef79aba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:30:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:34,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 4269 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:30:34,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:30:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-23 14:30:34,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:30:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-23 14:30:35,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767936373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:30:35,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941928837] [2022-11-23 14:30:35,243 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-23 14:30:35,243 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:30:35,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:30:35,253 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:30:35,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:30:41,909 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 9 treesize of output 11 [2022-11-23 14:30:43,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:43,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:43,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:45,075 INFO L217 Elim1Store]: Index analysis took 2684 ms