./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI --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 f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 --- 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-5e519f3 [2022-11-03 01:49:07,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:49:07,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:49:07,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:49:07,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:49:07,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:49:07,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:49:07,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:49:07,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:49:07,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:49:07,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:49:07,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:49:07,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:49:07,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:49:07,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:49:07,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:49:07,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:49:07,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:49:07,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:49:07,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:49:07,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:49:07,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:49:07,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:49:07,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:49:07,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:49:07,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:49:07,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:49:07,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:49:07,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:49:07,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:49:07,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:49:07,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:49:07,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:49:07,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:49:07,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:49:07,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:49:07,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:49:07,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:49:07,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:49:07,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:49:07,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:49:07,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:49:07,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:49:07,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:49:07,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:49:07,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:49:07,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:49:07,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:49:07,232 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:49:07,232 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:49:07,233 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:49:07,233 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:49:07,234 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:49:07,234 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:49:07,234 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:49:07,235 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:49:07,235 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:49:07,235 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:49:07,235 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:49:07,235 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:49:07,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:49:07,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:49:07,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:49:07,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:49:07,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:49:07,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:49:07,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:49:07,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:49:07,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:49:07,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:49:07,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:49:07,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:49:07,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:49:07,239 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:49:07,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:49:07,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:49:07,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:49:07,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:49:07,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:49:07,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:49:07,242 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_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2022-11-03 01:49:07,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:49:07,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:49:07,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:49:07,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:49:07,588 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:49:07,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-11-03 01:49:07,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/data/e39d85462/0a9b1d353a2b4b979e87e7bfd1e71cf6/FLAGa900b2f99 [2022-11-03 01:49:08,631 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:49:08,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-11-03 01:49:08,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/data/e39d85462/0a9b1d353a2b4b979e87e7bfd1e71cf6/FLAGa900b2f99 [2022-11-03 01:49:09,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/data/e39d85462/0a9b1d353a2b4b979e87e7bfd1e71cf6 [2022-11-03 01:49:09,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:49:09,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:49:09,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:49:09,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:49:09,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:49:09,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:09" (1/1) ... [2022-11-03 01:49:09,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643ec724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:09, skipping insertion in model container [2022-11-03 01:49:09,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:09" (1/1) ... [2022-11-03 01:49:09,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:49:09,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:49:10,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2022-11-03 01:49:10,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:49:10,878 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:49:11,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2022-11-03 01:49:11,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:49:11,549 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:49:11,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11 WrapperNode [2022-11-03 01:49:11,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:49:11,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:49:11,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:49:11,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:49:11,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:11,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:11,825 INFO L138 Inliner]: procedures = 200, calls = 1489, calls flagged for inlining = 98, calls inlined = 84, statements flattened = 3293 [2022-11-03 01:49:11,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:49:11,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:49:11,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:49:11,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:49:11,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:11,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:11,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:11,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:11,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:12,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:12,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:12,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:12,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:49:12,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:49:12,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:49:12,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:49:12,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (1/1) ... [2022-11-03 01:49:12,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:49:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:12,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:49:12,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:49:12,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:49:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:49:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 01:49:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 01:49:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 01:49:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 01:49:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 01:49:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 01:49:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:49:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:49:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 01:49:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 01:49:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 01:49:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 01:49:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 01:49:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 01:49:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 01:49:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 01:49:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 01:49:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 01:49:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-03 01:49:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-03 01:49:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 01:49:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 01:49:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 01:49:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 01:49:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:49:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:49:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:49:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:49:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 01:49:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 01:49:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-03 01:49:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-03 01:49:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:49:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:49:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-03 01:49:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-03 01:49:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:49:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 01:49:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 01:49:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:49:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 01:49:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 01:49:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:49:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:49:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 01:49:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 01:49:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 01:49:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 01:49:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-11-03 01:49:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-11-03 01:49:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 01:49:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 01:49:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 01:49:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 01:49:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-11-03 01:49:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-11-03 01:49:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:49:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 01:49:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 01:49:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 01:49:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 01:49:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:49:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:49:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:49:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:49:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 01:49:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 01:49:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-03 01:49:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-03 01:49:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:49:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:49:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-11-03 01:49:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-11-03 01:49:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:49:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:49:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:49:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 01:49:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 01:49:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 01:49:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 01:49:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-11-03 01:49:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-11-03 01:49:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:49:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 01:49:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 01:49:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:49:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-11-03 01:49:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-11-03 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 01:49:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 01:49:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-11-03 01:49:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-11-03 01:49:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-11-03 01:49:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-11-03 01:49:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:49:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:49:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 01:49:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 01:49:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-03 01:49:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-03 01:49:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-03 01:49:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-03 01:49:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 01:49:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 01:49:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 01:49:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 01:49:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 01:49:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 01:49:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 01:49:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 01:49:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-11-03 01:49:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-11-03 01:49:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:49:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-03 01:49:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-03 01:49:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-03 01:49:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-03 01:49:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-03 01:49:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-03 01:49:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 01:49:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 01:49:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:49:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:49:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:49:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:49:12,852 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:49:12,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:49:13,604 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:13,616 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:13,626 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:13,627 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:13,629 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:13,630 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:13,638 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:49:15,776 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2022-11-03 01:49:15,776 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2022-11-03 01:49:15,776 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##265: assume !false; [2022-11-03 01:49:15,776 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##264: assume false; [2022-11-03 01:49:15,776 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume !false; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##227: assume false; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume !false;call ULTIMATE.dealloc(fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset);havoc fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset;call ULTIMATE.dealloc(fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset);havoc fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume false; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-11-03 01:49:15,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-11-03 01:49:15,778 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##391: assume !false; [2022-11-03 01:49:15,778 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##390: assume false; [2022-11-03 01:49:15,885 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:49:16,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:49:16,707 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:49:16,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:16 BoogieIcfgContainer [2022-11-03 01:49:16,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:49:16,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:49:16,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:49:16,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:49:16,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:49:09" (1/3) ... [2022-11-03 01:49:16,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29327c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:16, skipping insertion in model container [2022-11-03 01:49:16,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:11" (2/3) ... [2022-11-03 01:49:16,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29327c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:16, skipping insertion in model container [2022-11-03 01:49:16,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:16" (3/3) ... [2022-11-03 01:49:16,723 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-11-03 01:49:16,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:49:16,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:49:16,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:49:16,863 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;@4a5f65be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:49:16,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:49:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 511 states have internal predecessors, (656), 260 states have call successors, (260), 56 states have call predecessors, (260), 56 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2022-11-03 01:49:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:49:16,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:16,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:16,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1634586507, now seen corresponding path program 1 times [2022-11-03 01:49:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:16,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469180837] [2022-11-03 01:49:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:17,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:17,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469180837] [2022-11-03 01:49:17,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469180837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:17,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:17,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:17,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671299667] [2022-11-03 01:49:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:17,489 INFO L87 Difference]: Start difference. First operand has 821 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 511 states have internal predecessors, (656), 260 states have call successors, (260), 56 states have call predecessors, (260), 56 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:49:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:18,403 INFO L93 Difference]: Finished difference Result 1640 states and 2353 transitions. [2022-11-03 01:49:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-03 01:49:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:18,442 INFO L225 Difference]: With dead ends: 1640 [2022-11-03 01:49:18,442 INFO L226 Difference]: Without dead ends: 819 [2022-11-03 01:49:18,451 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 [2022-11-03 01:49:18,463 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 0 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:18,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2081 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:49:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-03 01:49:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2022-11-03 01:49:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 503 states have (on average 1.3001988071570576) internal successors, (654), 509 states have internal predecessors, (654), 260 states have call successors, (260), 56 states have call predecessors, (260), 55 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2022-11-03 01:49:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1172 transitions. [2022-11-03 01:49:18,609 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1172 transitions. Word has length 15 [2022-11-03 01:49:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:18,610 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1172 transitions. [2022-11-03 01:49:18,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:49:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1172 transitions. [2022-11-03 01:49:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:49:18,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:18,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:18,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:49:18,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:18,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1239223528, now seen corresponding path program 1 times [2022-11-03 01:49:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:18,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259113457] [2022-11-03 01:49:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:18,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:18,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259113457] [2022-11-03 01:49:18,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259113457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:18,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531873766] [2022-11-03 01:49:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:18,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:18,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:18,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:18,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:49:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:19,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:49:19,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:49:19,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:19,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531873766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:19,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:49:19,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 01:49:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746581477] [2022-11-03 01:49:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:49:19,511 INFO L87 Difference]: Start difference. First operand 819 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:49:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:20,816 INFO L93 Difference]: Finished difference Result 2373 states and 3389 transitions. [2022-11-03 01:49:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:20,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-03 01:49:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:20,828 INFO L225 Difference]: With dead ends: 2373 [2022-11-03 01:49:20,828 INFO L226 Difference]: Without dead ends: 1559 [2022-11-03 01:49:20,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:49:20,834 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1051 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:20,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 2405 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 01:49:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2022-11-03 01:49:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1555. [2022-11-03 01:49:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 954 states have (on average 1.29874213836478) internal successors, (1239), 965 states have internal predecessors, (1239), 490 states have call successors, (490), 111 states have call predecessors, (490), 110 states have return successors, (488), 487 states have call predecessors, (488), 488 states have call successors, (488) [2022-11-03 01:49:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2217 transitions. [2022-11-03 01:49:20,985 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2217 transitions. Word has length 16 [2022-11-03 01:49:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:20,986 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 2217 transitions. [2022-11-03 01:49:20,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:49:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2217 transitions. [2022-11-03 01:49:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 01:49:20,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:20,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:21,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:49:21,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:21,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1150068244, now seen corresponding path program 1 times [2022-11-03 01:49:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204584819] [2022-11-03 01:49:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:21,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:21,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204584819] [2022-11-03 01:49:21,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204584819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:21,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399181882] [2022-11-03 01:49:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:21,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:21,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:49:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:22,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:49:22,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:22,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:49:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:22,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399181882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:49:22,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [569108809] [2022-11-03 01:49:22,113 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-03 01:49:22,113 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:49:22,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:49:22,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:49:22,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:49:24,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:49:24,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:49:24,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:49:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:27,654 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:49:27,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:49:28,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:28,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 446 [2022-11-03 01:49:30,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:49:30,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:49:30,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:49:30,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:49:37,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:37,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:49:38,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:38,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:49:39,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:39,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6509 treesize of output 6228 [2022-11-03 01:49:40,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:49:47,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:49:47,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:49:48,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:49:48,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:49:49,761 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:49:49,797 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:49:49,807 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-03 01:49:49,912 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:49:49,925 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:50:02,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [569108809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:02,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:50:02,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2022-11-03 01:50:02,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573341531] [2022-11-03 01:50:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:02,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 01:50:02,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 01:50:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:50:02,907 INFO L87 Difference]: Start difference. First operand 1555 states and 2217 transitions. Second operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:50:12,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:14,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:16,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:16,926 INFO L93 Difference]: Finished difference Result 1578 states and 2246 transitions. [2022-11-03 01:50:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 01:50:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-03 01:50:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:16,936 INFO L225 Difference]: With dead ends: 1578 [2022-11-03 01:50:16,936 INFO L226 Difference]: Without dead ends: 1575 [2022-11-03 01:50:16,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:50:16,939 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 7 mSDsluCounter, 14644 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14434 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 2219 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:16,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14434 Invalid, 3394 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 3 Unknown, 2219 Unchecked, 13.7s Time] [2022-11-03 01:50:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2022-11-03 01:50:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2022-11-03 01:50:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 969 states have (on average 1.301341589267286) internal successors, (1261), 980 states have internal predecessors, (1261), 492 states have call successors, (492), 115 states have call predecessors, (492), 113 states have return successors, (490), 488 states have call predecessors, (490), 490 states have call successors, (490) [2022-11-03 01:50:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2243 transitions. [2022-11-03 01:50:17,028 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2243 transitions. Word has length 30 [2022-11-03 01:50:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:17,028 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2243 transitions. [2022-11-03 01:50:17,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:50:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2243 transitions. [2022-11-03 01:50:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:50:17,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:17,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:17,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:17,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:17,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1157582882, now seen corresponding path program 1 times [2022-11-03 01:50:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:17,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719775013] [2022-11-03 01:50:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:17,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:17,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719775013] [2022-11-03 01:50:17,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719775013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:50:17,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806844105] [2022-11-03 01:50:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:17,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:17,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:17,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:50:17,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:50:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:17,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:50:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:50:18,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:18,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806844105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:18,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:50:18,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 01:50:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910197685] [2022-11-03 01:50:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:50:18,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:50:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:18,003 INFO L87 Difference]: Start difference. First operand 1575 states and 2243 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:50:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:19,657 INFO L93 Difference]: Finished difference Result 3590 states and 5203 transitions. [2022-11-03 01:50:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:19,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-03 01:50:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:19,669 INFO L225 Difference]: With dead ends: 3590 [2022-11-03 01:50:19,669 INFO L226 Difference]: Without dead ends: 2043 [2022-11-03 01:50:19,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:19,675 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 492 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:19,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 2171 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 01:50:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-11-03 01:50:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2039. [2022-11-03 01:50:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1269 states have (on average 1.3144208037825058) internal successors, (1668), 1278 states have internal predecessors, (1668), 660 states have call successors, (660), 111 states have call predecessors, (660), 109 states have return successors, (658), 656 states have call predecessors, (658), 658 states have call successors, (658) [2022-11-03 01:50:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2986 transitions. [2022-11-03 01:50:19,794 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2986 transitions. Word has length 31 [2022-11-03 01:50:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:19,794 INFO L495 AbstractCegarLoop]: Abstraction has 2039 states and 2986 transitions. [2022-11-03 01:50:19,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:50:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2986 transitions. [2022-11-03 01:50:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:50:19,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:19,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:19,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:20,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:20,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1239234258, now seen corresponding path program 1 times [2022-11-03 01:50:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:20,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122055029] [2022-11-03 01:50:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:20,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122055029] [2022-11-03 01:50:20,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122055029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:50:20,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101972606] [2022-11-03 01:50:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:20,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:50:20,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:50:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:20,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:50:20,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:20,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:50:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:20,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101972606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:50:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745773590] [2022-11-03 01:50:20,842 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-03 01:50:20,842 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:50:20,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:50:20,843 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:50:20,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:50:21,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:21,754 INFO L244 Elim1Store]: Index analysis took 108 ms [2022-11-03 01:50:24,008 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 01:50:24,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 01:50:24,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:50:24,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:50:25,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:25,100 INFO L244 Elim1Store]: Index analysis took 165 ms [2022-11-03 01:50:28,396 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:50:28,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:50:28,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:50:30,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:50:30,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:50:30,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:50:30,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:50:37,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:37,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:50:38,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:38,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6513 treesize of output 6232 [2022-11-03 01:50:39,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:39,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:50:46,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:50:48,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:50:48,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:50:48,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:50:48,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:50:50,615 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:50:50,656 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 114 for LOIs [2022-11-03 01:50:50,692 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:50:50,703 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:50:50,717 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:51:09,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [745773590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:09,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:51:09,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 3, 4] total 31 [2022-11-03 01:51:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118277742] [2022-11-03 01:51:09,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:09,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 01:51:09,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 01:51:09,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-11-03 01:51:09,300 INFO L87 Difference]: Start difference. First operand 2039 states and 2986 transitions. Second operand has 26 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:51:16,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:20,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:20,991 INFO L93 Difference]: Finished difference Result 3362 states and 4956 transitions. [2022-11-03 01:51:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 01:51:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-11-03 01:51:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:21,004 INFO L225 Difference]: With dead ends: 3362 [2022-11-03 01:51:21,004 INFO L226 Difference]: Without dead ends: 2039 [2022-11-03 01:51:21,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-11-03 01:51:21,011 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 8 mSDsluCounter, 13687 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13689 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 588 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:21,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13689 Invalid, 1801 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 1211 Invalid, 0 Unknown, 588 Unchecked, 11.3s Time] [2022-11-03 01:51:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2022-11-03 01:51:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2039. [2022-11-03 01:51:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1269 states have (on average 1.313632781717888) internal successors, (1667), 1278 states have internal predecessors, (1667), 660 states have call successors, (660), 111 states have call predecessors, (660), 109 states have return successors, (658), 656 states have call predecessors, (658), 658 states have call successors, (658) [2022-11-03 01:51:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2985 transitions. [2022-11-03 01:51:21,126 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2985 transitions. Word has length 32 [2022-11-03 01:51:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:21,128 INFO L495 AbstractCegarLoop]: Abstraction has 2039 states and 2985 transitions. [2022-11-03 01:51:21,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:51:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2985 transitions. [2022-11-03 01:51:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:51:21,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:21,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:21,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:21,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash -432849447, now seen corresponding path program 1 times [2022-11-03 01:51:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:21,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450635125] [2022-11-03 01:51:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:21,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:21,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450635125] [2022-11-03 01:51:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450635125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:21,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263587614] [2022-11-03 01:51:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:21,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:21,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:21,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:51:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:22,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:22,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:51:22,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:22,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263587614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:22,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:22,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 01:51:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466990857] [2022-11-03 01:51:22,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:22,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:51:22,061 INFO L87 Difference]: Start difference. First operand 2039 states and 2985 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:51:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:22,851 INFO L93 Difference]: Finished difference Result 4050 states and 5935 transitions. [2022-11-03 01:51:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:22,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-03 01:51:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:22,862 INFO L225 Difference]: With dead ends: 4050 [2022-11-03 01:51:22,862 INFO L226 Difference]: Without dead ends: 2037 [2022-11-03 01:51:22,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:51:22,869 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 509 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:22,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1407 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:51:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-11-03 01:51:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2022-11-03 01:51:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1267 states have (on average 1.3093922651933703) internal successors, (1659), 1276 states have internal predecessors, (1659), 660 states have call successors, (660), 111 states have call predecessors, (660), 109 states have return successors, (658), 656 states have call predecessors, (658), 658 states have call successors, (658) [2022-11-03 01:51:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2977 transitions. [2022-11-03 01:51:22,986 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2977 transitions. Word has length 32 [2022-11-03 01:51:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:22,986 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2977 transitions. [2022-11-03 01:51:22,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:51:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2977 transitions. [2022-11-03 01:51:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:51:22,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:22,988 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:51:23,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:23,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:23,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 761489431, now seen corresponding path program 1 times [2022-11-03 01:51:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046297060] [2022-11-03 01:51:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:51:23,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046297060] [2022-11-03 01:51:23,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046297060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875130374] [2022-11-03 01:51:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:23,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:23,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:23,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:23,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:51:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:23,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:23,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:51:23,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:51:23,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875130374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:23,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497304682] [2022-11-03 01:51:23,954 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-03 01:51:23,954 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:23,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:23,955 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:23,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:51:24,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:24,803 INFO L244 Elim1Store]: Index analysis took 118 ms [2022-11-03 01:51:27,009 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 01:51:27,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 01:51:27,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:51:27,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:51:27,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:51:28,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:28,092 INFO L244 Elim1Store]: Index analysis took 163 ms [2022-11-03 01:51:31,252 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:51:31,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:51:32,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:51:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:51:33,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:51:33,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:51:39,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:39,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:51:40,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:40,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:51:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:41,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6509 treesize of output 6228 [2022-11-03 01:51:48,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:51:50,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:51:50,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:51:50,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:51:50,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:51:52,247 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:51:52,275 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:51:52,284 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-03 01:51:52,366 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:51:52,375 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:12,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [497304682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:12,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:12,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 3, 4] total 32 [2022-11-03 01:52:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934911727] [2022-11-03 01:52:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 01:52:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 01:52:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:52:12,933 INFO L87 Difference]: Start difference. First operand 2037 states and 2977 transitions. Second operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:52:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:20,184 INFO L93 Difference]: Finished difference Result 2058 states and 3005 transitions. [2022-11-03 01:52:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 01:52:20,185 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-03 01:52:20,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:20,196 INFO L225 Difference]: With dead ends: 2058 [2022-11-03 01:52:20,196 INFO L226 Difference]: Without dead ends: 2055 [2022-11-03 01:52:20,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:52:20,199 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 7 mSDsluCounter, 10319 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10474 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1520 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:20,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10474 Invalid, 2396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 875 Invalid, 0 Unknown, 1520 Unchecked, 7.0s Time] [2022-11-03 01:52:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2022-11-03 01:52:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2049. [2022-11-03 01:52:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 1277 states have (on average 1.3093187157400157) internal successors, (1672), 1286 states have internal predecessors, (1672), 661 states have call successors, (661), 112 states have call predecessors, (661), 110 states have return successors, (659), 657 states have call predecessors, (659), 659 states have call successors, (659) [2022-11-03 01:52:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2992 transitions. [2022-11-03 01:52:20,326 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2992 transitions. Word has length 36 [2022-11-03 01:52:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:20,327 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 2992 transitions. [2022-11-03 01:52:20,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:52:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2992 transitions. [2022-11-03 01:52:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 01:52:20,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:20,329 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:52:20,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:20,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:20,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:20,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:20,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1001318799, now seen corresponding path program 1 times [2022-11-03 01:52:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:20,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957962378] [2022-11-03 01:52:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:20,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:52:20,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:20,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957962378] [2022-11-03 01:52:20,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957962378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:20,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225097950] [2022-11-03 01:52:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:20,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:20,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:20,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:20,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:52:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:21,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:52:21,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:52:21,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:52:21,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225097950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:21,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1011830302] [2022-11-03 01:52:21,290 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-03 01:52:21,292 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:21,292 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:21,293 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:21,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:22,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:25,349 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:52:25,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:52:25,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:52:25,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:52:26,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:26,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 446 [2022-11-03 01:52:26,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:52:27,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:52:27,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:52:27,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:52:28,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:52:34,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:34,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:52:35,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:35,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6513 treesize of output 6232 [2022-11-03 01:52:36,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:52:36,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:36,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:52:44,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:52:44,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:52:44,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:52:44,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:52:47,437 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:52:47,464 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 114 for LOIs [2022-11-03 01:52:47,485 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:52:47,493 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:52:47,505 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:53:11,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1011830302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:11,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:53:11,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 3, 4] total 33 [2022-11-03 01:53:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758035448] [2022-11-03 01:53:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:11,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 01:53:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 01:53:11,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 01:53:11,039 INFO L87 Difference]: Start difference. First operand 2049 states and 2992 transitions. Second operand has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:53:16,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:18,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:18,133 INFO L93 Difference]: Finished difference Result 3372 states and 4959 transitions. [2022-11-03 01:53:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 01:53:18,134 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-11-03 01:53:18,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:18,145 INFO L225 Difference]: With dead ends: 3372 [2022-11-03 01:53:18,145 INFO L226 Difference]: Without dead ends: 2049 [2022-11-03 01:53:18,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 01:53:18,151 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 7 mSDsluCounter, 12855 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12595 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1518 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:18,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12595 Invalid, 2431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 910 Invalid, 0 Unknown, 1518 Unchecked, 6.8s Time] [2022-11-03 01:53:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-11-03 01:53:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2039. [2022-11-03 01:53:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1269 states have (on average 1.309692671394799) internal successors, (1662), 1278 states have internal predecessors, (1662), 660 states have call successors, (660), 111 states have call predecessors, (660), 109 states have return successors, (658), 656 states have call predecessors, (658), 658 states have call successors, (658) [2022-11-03 01:53:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2980 transitions. [2022-11-03 01:53:18,270 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2980 transitions. Word has length 38 [2022-11-03 01:53:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:18,270 INFO L495 AbstractCegarLoop]: Abstraction has 2039 states and 2980 transitions. [2022-11-03 01:53:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:53:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2980 transitions. [2022-11-03 01:53:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 01:53:18,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:18,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:18,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:53:18,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:53:18,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1020892178, now seen corresponding path program 1 times [2022-11-03 01:53:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:18,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457905457] [2022-11-03 01:53:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:18,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:18,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457905457] [2022-11-03 01:53:18,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457905457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:53:18,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927028030] [2022-11-03 01:53:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:18,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:53:18,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:53:18,693 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:53:18,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:53:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:19,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:53:19,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:53:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:19,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:53:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:19,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927028030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:53:19,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1676099993] [2022-11-03 01:53:19,208 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-03 01:53:19,208 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:53:19,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:53:19,208 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:53:19,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:53:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:20,175 INFO L244 Elim1Store]: Index analysis took 110 ms [2022-11-03 01:53:22,371 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 01:53:22,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 01:53:22,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:53:23,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:23,043 INFO L244 Elim1Store]: Index analysis took 151 ms [2022-11-03 01:53:26,166 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:53:26,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:53:26,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:53:26,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:53:27,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 741 treesize of output 624 [2022-11-03 01:53:28,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:53:28,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 01:53:28,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 01:53:34,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:34,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6518 treesize of output 6181 [2022-11-03 01:53:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:35,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6514 treesize of output 6177 [2022-11-03 01:53:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:53:36,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6519 treesize of output 6238 [2022-11-03 01:53:36,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:53:44,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:53:44,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:53:44,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:53:44,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:53:45,981 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:53:46,006 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:53:46,012 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-03 01:53:46,061 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:53:46,068 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:54:00,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1676099993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:00,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:54:00,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2022-11-03 01:54:00,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505432511] [2022-11-03 01:54:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:00,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 01:54:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 01:54:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:54:00,930 INFO L87 Difference]: Start difference. First operand 2039 states and 2980 transitions. Second operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 01:54:05,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:08,559 INFO L93 Difference]: Finished difference Result 3369 states and 4959 transitions. [2022-11-03 01:54:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 01:54:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2022-11-03 01:54:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:08,575 INFO L225 Difference]: With dead ends: 3369 [2022-11-03 01:54:08,575 INFO L226 Difference]: Without dead ends: 2054 [2022-11-03 01:54:08,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:54:08,582 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 5 mSDsluCounter, 10859 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11153 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1579 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:08,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11153 Invalid, 2312 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 1579 Unchecked, 7.4s Time] [2022-11-03 01:54:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-03 01:54:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2022-11-03 01:54:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1281 states have (on average 1.3091334894613582) internal successors, (1677), 1290 states have internal predecessors, (1677), 662 states have call successors, (662), 113 states have call predecessors, (662), 110 states have return successors, (660), 657 states have call predecessors, (660), 660 states have call successors, (660) [2022-11-03 01:54:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2999 transitions. [2022-11-03 01:54:08,729 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2999 transitions. Word has length 40 [2022-11-03 01:54:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:08,729 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2999 transitions. [2022-11-03 01:54:08,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 01:54:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2999 transitions. [2022-11-03 01:54:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 01:54:08,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:08,732 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:54:08,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:08,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 01:54:08,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -465151697, now seen corresponding path program 1 times [2022-11-03 01:54:08,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:08,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037149764] [2022-11-03 01:54:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:08,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:54:09,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037149764] [2022-11-03 01:54:09,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037149764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714951969] [2022-11-03 01:54:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:09,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:09,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:09,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:09,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:54:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:09,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:54:09,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:54:09,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:54:09,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714951969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:54:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [99127728] [2022-11-03 01:54:09,734 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-03 01:54:09,734 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:09,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:09,735 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:09,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:54:10,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:10,533 INFO L244 Elim1Store]: Index analysis took 116 ms [2022-11-03 01:54:14,167 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:54:14,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:54:14,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:54:14,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:14,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 446 [2022-11-03 01:54:15,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:54:15,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:54:16,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:54:16,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:16,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:54:16,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:54:17,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:54:23,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:54:24,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:54:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:25,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6509 treesize of output 6228 [2022-11-03 01:54:32,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:54:33,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:54:33,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:54:33,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:54:34,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:54:34,630 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 01:54:35,516 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 01:54:35,731 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 01:54:37,007 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:54:37,037 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:54:37,043 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-03 01:54:37,122 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:54:37,133 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:55:03,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [99127728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:03,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:55:03,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 3, 4] total 35 [2022-11-03 01:55:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132016798] [2022-11-03 01:55:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 01:55:03,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 01:55:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 01:55:03,640 INFO L87 Difference]: Start difference. First operand 2054 states and 2999 transitions. Second operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:55:08,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:09,814 INFO L93 Difference]: Finished difference Result 2080 states and 3037 transitions. [2022-11-03 01:55:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 01:55:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-03 01:55:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:09,826 INFO L225 Difference]: With dead ends: 2080 [2022-11-03 01:55:09,827 INFO L226 Difference]: Without dead ends: 2077 [2022-11-03 01:55:09,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 01:55:09,829 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 4 mSDsluCounter, 12655 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12950 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1790 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:09,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12950 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 568 Invalid, 0 Unknown, 1790 Unchecked, 5.9s Time] [2022-11-03 01:55:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2022-11-03 01:55:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2070. [2022-11-03 01:55:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1295 states have (on average 1.311969111969112) internal successors, (1699), 1304 states have internal predecessors, (1699), 663 states have call successors, (663), 114 states have call predecessors, (663), 111 states have return successors, (661), 658 states have call predecessors, (661), 661 states have call successors, (661) [2022-11-03 01:55:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3023 transitions. [2022-11-03 01:55:09,976 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3023 transitions. Word has length 39 [2022-11-03 01:55:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:09,976 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 3023 transitions. [2022-11-03 01:55:09,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:55:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3023 transitions. [2022-11-03 01:55:09,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:55:09,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:09,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:10,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:10,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:10,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash 483602202, now seen corresponding path program 1 times [2022-11-03 01:55:10,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:10,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113916048] [2022-11-03 01:55:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:10,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:10,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113916048] [2022-11-03 01:55:10,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113916048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:10,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621146882] [2022-11-03 01:55:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:10,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:10,337 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:10,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:55:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:10,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:55:10,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:10,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:10,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621146882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:10,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592815915] [2022-11-03 01:55:10,950 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-03 01:55:10,951 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:55:10,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:55:10,951 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:55:10,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:55:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:11,702 INFO L244 Elim1Store]: Index analysis took 108 ms [2022-11-03 01:55:14,030 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 01:55:14,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 01:55:14,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:55:14,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:55:14,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:55:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:15,132 INFO L244 Elim1Store]: Index analysis took 179 ms [2022-11-03 01:55:18,370 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:55:18,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:55:19,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:55:20,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:55:20,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:20,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:55:20,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:55:26,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:26,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:55:27,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:27,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:55:28,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:28,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6509 treesize of output 6228 [2022-11-03 01:55:28,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:55:36,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:55:36,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:55:36,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:55:36,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:55:38,541 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:55:38,568 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 95 for LOIs [2022-11-03 01:55:38,574 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 99 for LOIs [2022-11-03 01:55:38,580 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:55:38,587 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-03 01:55:38,706 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:55:38,713 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:56:01,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '71786#(and (= |~#fst_tx_task~0.base| 47) (= |~#fst_pci_dev_id~0.base| 46) (= ~LDV_IN_INTERRUPT~0 1) (= |~#fst_work_q_lock~0.base| 50) (<= 0 ~ldv_module_refcounter~0) (= |~#type_strings~0.offset| 0) (= ~__mod_pci_device_table~0.class_mask 0) (= |~#fst_int_task~0.offset| 0) (= ~__mod_pci_device_table~0.subvendor 0) (= |~#fst_ops~0.base| 54) (= ~__mod_pci_device_table~0.class 0) (= |~#fst_work_intq~0.offset| 0) (= 55 |~#fst_driver~0.base|) (= 53 |~#type_strings~0.base|) (not (= ~ldv_module_refcounter~0 1)) (= |~#fst_int_task~0.base| 48) (= |~#fst_pci_dev_id~0.offset| 0) (= 12 ~fst_txq_high~0) (= 0 |~#fst_tx_task~0.offset|) (= |~#fst_excluded_list~0.offset| 0) (= ~fst_txq_low~0 8) (= 49 |~#fst_card_array~0.base|) (= 52 |~#fst_work_intq~0.base|) (= |~#fst_excluded_list~0.base| 45) (= ~fst_excluded_cards~0 0) (= ~__mod_pci_device_table~0.device 0) (= |~#fst_ops~0.offset| 0) (= 51 |~#fst_work_txq~0.base|) (= ~__mod_pci_device_table~0.driver_data 0) (= ~__mod_pci_device_table~0.vendor 0) (= ~__mod_pci_device_table~0.subdevice 0) (= |~#fst_driver~0.offset| 0) (= |#NULL.offset| 0) (= 7 ~fst_max_reads~0) (= |~#fst_work_q_lock~0.offset| 0) (<= 0 |#StackHeapBarrier|) (= |~#fst_work_txq~0.offset| 0) (= |#NULL.base| 0) (= |~#fst_card_array~0.offset| 0))' at error location [2022-11-03 01:56:01,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:56:01,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:56:01,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-03 01:56:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873781515] [2022-11-03 01:56:01,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:56:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:56:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:56:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 01:56:01,822 INFO L87 Difference]: Start difference. First operand 2070 states and 3023 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 01:56:03,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:03,259 INFO L93 Difference]: Finished difference Result 4140 states and 6048 transitions. [2022-11-03 01:56:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:56:03,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 42 [2022-11-03 01:56:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:03,270 INFO L225 Difference]: With dead ends: 4140 [2022-11-03 01:56:03,270 INFO L226 Difference]: Without dead ends: 2073 [2022-11-03 01:56:03,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 01:56:03,279 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 0 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:03,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3109 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 01:56:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-11-03 01:56:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2022-11-03 01:56:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1298 states have (on average 1.3112480739599384) internal successors, (1702), 1307 states have internal predecessors, (1702), 663 states have call successors, (663), 114 states have call predecessors, (663), 111 states have return successors, (661), 658 states have call predecessors, (661), 661 states have call successors, (661) [2022-11-03 01:56:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3026 transitions. [2022-11-03 01:56:03,446 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3026 transitions. Word has length 42 [2022-11-03 01:56:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:03,446 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 3026 transitions. [2022-11-03 01:56:03,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 01:56:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3026 transitions. [2022-11-03 01:56:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:56:03,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:03,449 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:03,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:03,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:03,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:03,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1964335399, now seen corresponding path program 2 times [2022-11-03 01:56:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:03,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964755011] [2022-11-03 01:56:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:56:03,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964755011] [2022-11-03 01:56:03,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964755011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061487275] [2022-11-03 01:56:03,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:56:03,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:03,930 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:03,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 01:56:04,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:56:04,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:56:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 01:56:04,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:56:04,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:04,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061487275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:04,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:56:04,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2022-11-03 01:56:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616355951] [2022-11-03 01:56:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:56:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:56:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:04,825 INFO L87 Difference]: Start difference. First operand 2073 states and 3026 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-03 01:56:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:20,973 INFO L93 Difference]: Finished difference Result 7207 states and 10669 transitions. [2022-11-03 01:56:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:56:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 45 [2022-11-03 01:56:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:21,006 INFO L225 Difference]: With dead ends: 7207 [2022-11-03 01:56:21,006 INFO L226 Difference]: Without dead ends: 5887 [2022-11-03 01:56:21,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:56:21,015 INFO L413 NwaCegarLoop]: 2337 mSDtfsCounter, 3371 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 8103 mSolverCounterSat, 3051 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 11154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3051 IncrementalHoareTripleChecker+Valid, 8103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:21,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3809 Valid, 5646 Invalid, 11154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3051 Valid, 8103 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-11-03 01:56:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2022-11-03 01:56:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 5863. [2022-11-03 01:56:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5863 states, 3661 states have (on average 1.3179459164162797) internal successors, (4825), 3688 states have internal predecessors, (4825), 1924 states have call successors, (1924), 279 states have call predecessors, (1924), 277 states have return successors, (1925), 1918 states have call predecessors, (1925), 1922 states have call successors, (1925) [2022-11-03 01:56:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 8674 transitions. [2022-11-03 01:56:21,477 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 8674 transitions. Word has length 45 [2022-11-03 01:56:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:21,478 INFO L495 AbstractCegarLoop]: Abstraction has 5863 states and 8674 transitions. [2022-11-03 01:56:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-03 01:56:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 8674 transitions. [2022-11-03 01:56:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 01:56:21,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:21,481 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 01:56:21,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 01:56:21,697 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1748923850, now seen corresponding path program 1 times [2022-11-03 01:56:21,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:21,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562357181] [2022-11-03 01:56:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:56:22,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562357181] [2022-11-03 01:56:22,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562357181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302420674] [2022-11-03 01:56:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:22,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:22,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:22,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 01:56:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:22,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:56:22,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:56:22,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:56:22,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302420674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [193354017] [2022-11-03 01:56:22,739 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-03 01:56:22,740 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:56:22,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:56:22,740 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:56:22,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:56:23,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:25,958 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 01:56:25,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 01:56:26,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:26,716 INFO L244 Elim1Store]: Index analysis took 169 ms [2022-11-03 01:56:30,009 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:56:30,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:56:30,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:56:30,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:56:30,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:56:32,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:56:32,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2022-11-03 01:56:32,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-03 01:56:32,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2022-11-03 01:56:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:39,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6508 treesize of output 6171 [2022-11-03 01:56:40,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:40,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6513 treesize of output 6232 [2022-11-03 01:56:40,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:56:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:56:41,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6504 treesize of output 6167 [2022-11-03 01:56:49,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:56:49,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:56:49,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:56:49,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:56:49,770 INFO L356 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2022-11-03 01:56:49,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 36 [2022-11-03 01:56:49,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 01:56:50,370 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 01:56:50,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 01:56:51,301 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:56:51,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 01:56:51,639 INFO L356 Elim1Store]: treesize reduction 115, result has 43.9 percent of original size [2022-11-03 01:56:51,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 411 treesize of output 486 [2022-11-03 01:56:59,167 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 01:56:59,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 01:57:00,241 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:57:00,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 01:57:00,522 INFO L356 Elim1Store]: treesize reduction 115, result has 43.9 percent of original size [2022-11-03 01:57:00,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 411 treesize of output 486 [2022-11-03 01:57:25,930 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 01:57:25,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 01:57:28,311 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 130 for LOIs [2022-11-03 01:57:28,330 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:57:28,336 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 163 for LOIs [2022-11-03 01:57:28,491 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:57:28,500 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:18,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [193354017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:18,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:18,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [7, 6, 7] total 42 [2022-11-03 01:58:18,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485199182] [2022-11-03 01:58:18,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:18,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 01:58:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 01:58:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 01:58:18,253 INFO L87 Difference]: Start difference. First operand 5863 states and 8674 transitions. Second operand has 31 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:58:25,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:59,285 INFO L93 Difference]: Finished difference Result 6347 states and 9369 transitions. [2022-11-03 01:58:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:58:59,286 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-11-03 01:58:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:59,313 INFO L225 Difference]: With dead ends: 6347 [2022-11-03 01:58:59,314 INFO L226 Difference]: Without dead ends: 6336 [2022-11-03 01:58:59,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 52.0s TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 01:58:59,317 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 454 mSDsluCounter, 13409 mSDsCounter, 0 mSdLazyCounter, 6335 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 13225 SdHoareTripleChecker+Invalid, 10207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 6335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3683 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:59,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 13225 Invalid, 10207 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [189 Valid, 6335 Invalid, 0 Unknown, 3683 Unchecked, 38.0s Time] [2022-11-03 01:58:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2022-11-03 01:58:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 6208. [2022-11-03 01:58:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6208 states, 3875 states have (on average 1.3181935483870968) internal successors, (5108), 3911 states have internal predecessors, (5108), 2031 states have call successors, (2031), 303 states have call predecessors, (2031), 301 states have return successors, (2032), 2017 states have call predecessors, (2032), 2029 states have call successors, (2032) [2022-11-03 01:59:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 9171 transitions. [2022-11-03 01:59:00,019 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 9171 transitions. Word has length 45 [2022-11-03 01:59:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:00,019 INFO L495 AbstractCegarLoop]: Abstraction has 6208 states and 9171 transitions. [2022-11-03 01:59:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:59:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 9171 transitions. [2022-11-03 01:59:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 01:59:00,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:00,022 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 01:59:00,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:00,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1360329180, now seen corresponding path program 1 times [2022-11-03 01:59:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:00,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4683870] [2022-11-03 01:59:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:59:00,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:00,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4683870] [2022-11-03 01:59:00,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4683870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:00,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:00,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:59:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770080609] [2022-11-03 01:59:00,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:59:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:59:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:59:00,573 INFO L87 Difference]: Start difference. First operand 6208 states and 9171 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:59:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:04,635 INFO L93 Difference]: Finished difference Result 8056 states and 11976 transitions. [2022-11-03 01:59:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:59:04,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-03 01:59:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:04,675 INFO L225 Difference]: With dead ends: 8056 [2022-11-03 01:59:04,675 INFO L226 Difference]: Without dead ends: 8048 [2022-11-03 01:59:04,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:59:04,682 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1568 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:04,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 3686 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 01:59:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8048 states. [2022-11-03 01:59:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8048 to 7446. [2022-11-03 01:59:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 4646 states have (on average 1.318338355574688) internal successors, (6125), 4688 states have internal predecessors, (6125), 2443 states have call successors, (2443), 358 states have call predecessors, (2443), 356 states have return successors, (2444), 2428 states have call predecessors, (2444), 2441 states have call successors, (2444) [2022-11-03 01:59:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 11012 transitions. [2022-11-03 01:59:05,502 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 11012 transitions. Word has length 44 [2022-11-03 01:59:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:05,503 INFO L495 AbstractCegarLoop]: Abstraction has 7446 states and 11012 transitions. [2022-11-03 01:59:05,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:59:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 11012 transitions. [2022-11-03 01:59:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:59:05,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:05,505 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:05,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:59:05,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1951295833, now seen corresponding path program 1 times [2022-11-03 01:59:05,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:05,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632843250] [2022-11-03 01:59:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:05,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:59:05,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:05,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632843250] [2022-11-03 01:59:05,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632843250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:05,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:05,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:59:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719471897] [2022-11-03 01:59:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:59:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:59:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:59:05,690 INFO L87 Difference]: Start difference. First operand 7446 states and 11012 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:59:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:09,092 INFO L93 Difference]: Finished difference Result 10170 states and 15327 transitions. [2022-11-03 01:59:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:59:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2022-11-03 01:59:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:09,139 INFO L225 Difference]: With dead ends: 10170 [2022-11-03 01:59:09,139 INFO L226 Difference]: Without dead ends: 10164 [2022-11-03 01:59:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:59:09,147 INFO L413 NwaCegarLoop]: 1786 mSDtfsCounter, 974 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:09,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 4257 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:59:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10164 states. [2022-11-03 01:59:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10164 to 7452. [2022-11-03 01:59:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 4650 states have (on average 1.3180645161290323) internal successors, (6129), 4692 states have internal predecessors, (6129), 2445 states have call successors, (2445), 358 states have call predecessors, (2445), 356 states have return successors, (2446), 2430 states have call predecessors, (2446), 2443 states have call successors, (2446) [2022-11-03 01:59:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 11020 transitions. [2022-11-03 01:59:10,071 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 11020 transitions. Word has length 47 [2022-11-03 01:59:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:10,071 INFO L495 AbstractCegarLoop]: Abstraction has 7452 states and 11020 transitions. [2022-11-03 01:59:10,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:59:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 11020 transitions. [2022-11-03 01:59:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:59:10,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:10,074 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 01:59:10,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:59:10,075 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash -760773104, now seen corresponding path program 1 times [2022-11-03 01:59:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:10,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93934673] [2022-11-03 01:59:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:59:10,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93934673] [2022-11-03 01:59:10,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93934673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:10,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:10,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:59:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561189842] [2022-11-03 01:59:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:10,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:59:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:59:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:59:10,532 INFO L87 Difference]: Start difference. First operand 7452 states and 11020 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:59:18,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:18,716 INFO L93 Difference]: Finished difference Result 10612 states and 15786 transitions. [2022-11-03 01:59:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:59:18,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-11-03 01:59:18,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:18,759 INFO L225 Difference]: With dead ends: 10612 [2022-11-03 01:59:18,759 INFO L226 Difference]: Without dead ends: 10609 [2022-11-03 01:59:18,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:59:18,766 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 2585 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 6111 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:18,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 6111 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 01:59:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2022-11-03 01:59:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 10060. [2022-11-03 01:59:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10060 states, 6273 states have (on average 1.318348477602423) internal successors, (8270), 6328 states have internal predecessors, (8270), 3320 states have call successors, (3320), 467 states have call predecessors, (3320), 466 states have return successors, (3324), 3305 states have call predecessors, (3324), 3318 states have call successors, (3324) [2022-11-03 01:59:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10060 states to 10060 states and 14914 transitions. [2022-11-03 01:59:19,732 INFO L78 Accepts]: Start accepts. Automaton has 10060 states and 14914 transitions. Word has length 49 [2022-11-03 01:59:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:19,733 INFO L495 AbstractCegarLoop]: Abstraction has 10060 states and 14914 transitions. [2022-11-03 01:59:19,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 01:59:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10060 states and 14914 transitions. [2022-11-03 01:59:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 01:59:19,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:19,736 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 01:59:19,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:59:19,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash -924560926, now seen corresponding path program 1 times [2022-11-03 01:59:19,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:19,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506767328] [2022-11-03 01:59:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:59:19,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506767328] [2022-11-03 01:59:19,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506767328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045182523] [2022-11-03 01:59:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:19,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:19,973 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:19,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 01:59:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:20,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:59:20,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:59:20,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:59:20,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045182523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:20,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [796523378] [2022-11-03 01:59:20,666 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-03 01:59:20,666 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:20,666 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:20,666 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:20,666 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:59:21,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:24,963 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 01:59:24,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 01:59:25,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 01:59:25,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:59:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:25,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 446 [2022-11-03 01:59:26,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 01:59:27,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 741 treesize of output 624 [2022-11-03 01:59:27,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:59:27,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 01:59:27,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 01:59:34,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6518 treesize of output 6181 [2022-11-03 01:59:34,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:34,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6523 treesize of output 6242 [2022-11-03 01:59:35,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 01:59:36,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:36,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6514 treesize of output 6177 [2022-11-03 01:59:43,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 01:59:43,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:59:43,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:59:43,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:59:46,230 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 01:59:46,257 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 01:59:46,265 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-03 01:59:46,327 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 01:59:46,337 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:00:08,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [796523378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:08,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:00:08,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [7, 6, 7] total 38 [2022-11-03 02:00:08,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328614082] [2022-11-03 02:00:08,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:08,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:00:08,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:08,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:00:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:00:08,767 INFO L87 Difference]: Start difference. First operand 10060 states and 14914 transitions. Second operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:00:13,092 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 [] [2022-11-03 02:00:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:14,711 INFO L93 Difference]: Finished difference Result 17726 states and 26343 transitions. [2022-11-03 02:00:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:00:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2022-11-03 02:00:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:14,753 INFO L225 Difference]: With dead ends: 17726 [2022-11-03 02:00:14,753 INFO L226 Difference]: Without dead ends: 10065 [2022-11-03 02:00:14,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:00:14,784 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 7 mSDsluCounter, 9558 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9745 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1984 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:14,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9745 Invalid, 2570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 1984 Unchecked, 5.2s Time] [2022-11-03 02:00:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-11-03 02:00:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 10054. [2022-11-03 02:00:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10054 states, 6269 states have (on average 1.3185516031264954) internal successors, (8266), 6324 states have internal predecessors, (8266), 3319 states have call successors, (3319), 466 states have call predecessors, (3319), 465 states have return successors, (3323), 3304 states have call predecessors, (3323), 3317 states have call successors, (3323) [2022-11-03 02:00:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10054 states to 10054 states and 14908 transitions. [2022-11-03 02:00:15,998 INFO L78 Accepts]: Start accepts. Automaton has 10054 states and 14908 transitions. Word has length 49 [2022-11-03 02:00:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:15,999 INFO L495 AbstractCegarLoop]: Abstraction has 10054 states and 14908 transitions. [2022-11-03 02:00:15,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:00:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10054 states and 14908 transitions. [2022-11-03 02:00:16,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:00:16,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:16,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:00:16,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:00:16,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1982060955, now seen corresponding path program 1 times [2022-11-03 02:00:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:16,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641805560] [2022-11-03 02:00:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:00:16,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641805560] [2022-11-03 02:00:16,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641805560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982915757] [2022-11-03 02:00:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:16,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:16,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:16,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:00:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:00:16,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:00:17,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:00:17,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982915757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061818723] [2022-11-03 02:00:17,159 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-03 02:00:17,159 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:00:17,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:00:17,160 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:00:17,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:00:17,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 02:00:17,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 02:00:17,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 02:00:18,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,542 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 02:00:20,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 02:00:21,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:21,204 INFO L244 Elim1Store]: Index analysis took 144 ms [2022-11-03 02:00:24,393 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 02:00:24,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 02:00:25,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 02:00:26,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 02:00:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 741 treesize of output 624 [2022-11-03 02:00:26,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:00:33,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:33,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6518 treesize of output 6181 [2022-11-03 02:00:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6514 treesize of output 6177 [2022-11-03 02:00:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:34,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6519 treesize of output 6238 [2022-11-03 02:00:41,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:00:43,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:00:43,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 02:00:43,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:00:43,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:00:49,490 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 02:00:49,517 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 96 for LOIs [2022-11-03 02:00:49,524 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 02:00:49,530 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 94 for LOIs [2022-11-03 02:00:49,626 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 02:00:49,633 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 96 for LOIs [2022-11-03 02:00:49,641 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:00:58,090 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 296 DAG size of output: 238 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:03,650 WARN L234 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 296 DAG size of output: 238 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:01:35,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1061818723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:35,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:01:35,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [4, 6, 7] total 48 [2022-11-03 02:01:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794701082] [2022-11-03 02:01:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:35,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 02:01:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 02:01:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 02:01:35,845 INFO L87 Difference]: Start difference. First operand 10054 states and 14908 transitions. Second operand has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 02:01:41,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:41,378 INFO L93 Difference]: Finished difference Result 10121 states and 14987 transitions. [2022-11-03 02:01:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 02:01:41,379 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-11-03 02:01:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:41,414 INFO L225 Difference]: With dead ends: 10121 [2022-11-03 02:01:41,415 INFO L226 Difference]: Without dead ends: 10114 [2022-11-03 02:01:41,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 46.3s TimeCoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 02:01:41,422 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 12 mSDsluCounter, 12395 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12723 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1090 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:41,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12723 Invalid, 1710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 618 Invalid, 0 Unknown, 1090 Unchecked, 4.7s Time] [2022-11-03 02:01:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10114 states. [2022-11-03 02:01:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10114 to 10111. [2022-11-03 02:01:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10111 states, 6310 states have (on average 1.3182250396196513) internal successors, (8318), 6365 states have internal predecessors, (8318), 3327 states have call successors, (3327), 474 states have call predecessors, (3327), 473 states have return successors, (3331), 3312 states have call predecessors, (3331), 3325 states have call successors, (3331) [2022-11-03 02:01:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10111 states to 10111 states and 14976 transitions. [2022-11-03 02:01:42,403 INFO L78 Accepts]: Start accepts. Automaton has 10111 states and 14976 transitions. Word has length 51 [2022-11-03 02:01:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:42,403 INFO L495 AbstractCegarLoop]: Abstraction has 10111 states and 14976 transitions. [2022-11-03 02:01:42,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 02:01:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10111 states and 14976 transitions. [2022-11-03 02:01:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 02:01:42,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:42,406 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:01:42,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:42,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:01:42,621 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -479221084, now seen corresponding path program 1 times [2022-11-03 02:01:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:42,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763937384] [2022-11-03 02:01:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:01:42,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:42,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763937384] [2022-11-03 02:01:42,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763937384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:42,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966894897] [2022-11-03 02:01:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:42,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:42,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:42,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:42,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24e6aa4-ac3f-42c2-9add-89cda63a1d7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:01:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:43,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:01:43,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:01:43,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:01:43,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966894897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:43,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [973136746] [2022-11-03 02:01:43,574 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-03 02:01:43,574 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:01:43,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:01:43,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:01:43,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:01:44,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 02:01:44,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:46,702 INFO L356 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-03 02:01:46,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2022-11-03 02:01:47,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 02:01:47,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-03 02:01:47,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:47,581 INFO L244 Elim1Store]: Index analysis took 145 ms [2022-11-03 02:01:50,894 INFO L356 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-03 02:01:50,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2022-11-03 02:01:52,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 02:01:52,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 668 [2022-11-03 02:01:52,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:52,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 741 treesize of output 624 [2022-11-03 02:01:53,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:01:59,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:01:59,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6518 treesize of output 6181 [2022-11-03 02:02:00,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:00,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6514 treesize of output 6177 [2022-11-03 02:02:01,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:02:01,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6519 treesize of output 6238 [2022-11-03 02:02:01,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:02:09,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:02:09,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:02:09,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 02:02:09,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:02:16,155 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-03 02:02:16,181 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 97 for LOIs [2022-11-03 02:02:16,189 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-03 02:02:16,195 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 95 for LOIs [2022-11-03 02:02:16,299 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-03 02:02:16,310 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 97 for LOIs [2022-11-03 02:02:16,318 INFO L180 IcfgInterpreter]: Interpretation finished