./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba --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 4230dcd825d3a8c4f2993182656471f5db1d08c7b5deb32f72a092968196ad9c --- 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-b5237d8 [2022-11-22 01:22:44,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:22:44,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:22:44,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:22:44,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:22:44,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:22:44,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:22:44,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:22:44,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:22:44,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:22:44,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:22:44,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:22:44,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:22:44,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:22:44,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:22:44,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:22:44,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:22:44,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:22:44,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:22:44,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:22:44,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:22:44,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:22:44,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:22:44,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:22:44,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:22:44,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:22:44,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:22:44,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:22:44,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:22:44,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:22:44,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:22:44,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:22:44,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:22:44,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:22:44,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:22:44,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:22:44,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:22:44,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:22:44,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:22:44,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:22:44,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:22:44,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:22:44,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:22:44,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:22:44,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:22:44,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:22:44,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:22:44,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:22:44,255 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:22:44,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:22:44,255 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:22:44,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:22:44,256 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:22:44,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:22:44,257 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:22:44,257 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:22:44,257 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:22:44,258 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:22:44,258 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:22:44,258 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:22:44,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:22:44,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:22:44,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:22:44,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:22:44,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:22:44,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:22:44,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:22:44,261 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:22:44,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:22:44,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:22:44,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:22:44,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:22:44,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:22:44,263 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:22:44,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:22:44,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:22:44,264 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:22:44,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:22:44,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:22:44,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:22:44,265 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_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4230dcd825d3a8c4f2993182656471f5db1d08c7b5deb32f72a092968196ad9c [2022-11-22 01:22:44,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:22:44,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:22:44,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:22:44,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:22:44,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:22:44,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-22 01:22:48,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:22:48,734 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:22:48,735 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-22 01:22:48,777 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/data/84982c4c8/12a04e0927c44969b53bc933e7d0c642/FLAGa7082c605 [2022-11-22 01:22:48,799 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/data/84982c4c8/12a04e0927c44969b53bc933e7d0c642 [2022-11-22 01:22:48,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:22:48,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:22:48,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:22:48,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:22:48,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:22:48,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:22:48" (1/1) ... [2022-11-22 01:22:48,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a4b381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:48, skipping insertion in model container [2022-11-22 01:22:48,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:22:48" (1/1) ... [2022-11-22 01:22:48,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:22:48,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:22:51,040 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[256140,256153] [2022-11-22 01:22:51,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:22:51,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:22:51,539 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[256140,256153] [2022-11-22 01:22:51,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:22:51,707 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:22:51,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51 WrapperNode [2022-11-22 01:22:51,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:22:51,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:22:51,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:22:51,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:22:51,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:51,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:51,957 INFO L138 Inliner]: procedures = 287, calls = 1438, calls flagged for inlining = 167, calls inlined = 163, statements flattened = 3770 [2022-11-22 01:22:51,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:22:51,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:22:51,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:22:51,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:22:51,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:51,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:22:52,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:22:52,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:22:52,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:22:52,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (1/1) ... [2022-11-22 01:22:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:22:52,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:22:52,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:22:52,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:22:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:22:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:22:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:22:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:22:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:22:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:22:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:22:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:22:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-22 01:22:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-22 01:22:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:22:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:22:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-22 01:22:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-22 01:22:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:22:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:22:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-22 01:22:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-22 01:22:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 01:22:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 01:22:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-22 01:22:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-22 01:22:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 01:22:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 01:22:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-22 01:22:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-22 01:22:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:22:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:22:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:22:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:22:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:22:52,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:22:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-22 01:22:52,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-22 01:22:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-22 01:22:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-22 01:22:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:22:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:22:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-22 01:22:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-22 01:22:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-22 01:22:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-22 01:22:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:22:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:22:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-22 01:22:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-22 01:22:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 01:22:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 01:22:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 01:22:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 01:22:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:22:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:22:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:22:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:22:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-22 01:22:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-22 01:22:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:22:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:22:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 01:22:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 01:22:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-22 01:22:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-22 01:22:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:22:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:22:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-22 01:22:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-22 01:22:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:22:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-22 01:22:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-22 01:22:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:22:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:22:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-22 01:22:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-22 01:22:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:22:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:22:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-22 01:22:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-22 01:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-22 01:22:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-22 01:22:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-22 01:22:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-22 01:22:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:22:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-22 01:22:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-22 01:22:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-22 01:22:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-22 01:22:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:22:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:22:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-22 01:22:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-22 01:22:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:22:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:22:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-22 01:22:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-22 01:22:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-22 01:22:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-22 01:22:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:22:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-22 01:22:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-22 01:22:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-22 01:22:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-22 01:22:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:22:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:22:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-22 01:22:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-22 01:22:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:22:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-22 01:22:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-22 01:22:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:22:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:22:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:22:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:22:52,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:22:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:22:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-22 01:22:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-22 01:22:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:22:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:22:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:22:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:22:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-22 01:22:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-22 01:22:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-22 01:22:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-22 01:22:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-22 01:22:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-22 01:22:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:22:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:22:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-22 01:22:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-22 01:22:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 01:22:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 01:22:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:22:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:22:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-22 01:22:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-22 01:22:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-22 01:22:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-22 01:22:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:22:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-22 01:22:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-22 01:22:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-22 01:22:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-22 01:22:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-22 01:22:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-22 01:22:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:22:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:22:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:22:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:22:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 01:22:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 01:22:53,216 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:22:53,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:22:53,938 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:23:51,828 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:23:54,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:23:54,154 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:23:54,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:23:54 BoogieIcfgContainer [2022-11-22 01:23:54,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:23:54,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:23:54,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:23:54,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:23:54,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:22:48" (1/3) ... [2022-11-22 01:23:54,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30469ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:23:54, skipping insertion in model container [2022-11-22 01:23:54,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:22:51" (2/3) ... [2022-11-22 01:23:54,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30469ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:23:54, skipping insertion in model container [2022-11-22 01:23:54,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:23:54" (3/3) ... [2022-11-22 01:23:54,167 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-22 01:23:54,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:23:54,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:23:54,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:23:54,267 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;@6f871aed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:23:54,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:23:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 917 states, 528 states have (on average 1.2803030303030303) internal successors, (676), 565 states have internal predecessors, (676), 320 states have call successors, (320), 68 states have call predecessors, (320), 67 states have return successors, (313), 306 states have call predecessors, (313), 313 states have call successors, (313) [2022-11-22 01:23:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:23:54,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:23:54,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-22 01:23:54,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:23:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:23:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -576964136, now seen corresponding path program 1 times [2022-11-22 01:23:54,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:23:54,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637658213] [2022-11-22 01:23:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:54,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:23:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:23:56,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:23:56,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637658213] [2022-11-22 01:23:56,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637658213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:23:56,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:23:56,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:23:56,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560417182] [2022-11-22 01:23:56,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:23:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:23:56,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:23:56,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:23:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:23:56,262 INFO L87 Difference]: Start difference. First operand has 917 states, 528 states have (on average 1.2803030303030303) internal successors, (676), 565 states have internal predecessors, (676), 320 states have call successors, (320), 68 states have call predecessors, (320), 67 states have return successors, (313), 306 states have call predecessors, (313), 313 states have call successors, (313) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:23:58,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:03,543 INFO L93 Difference]: Finished difference Result 1831 states and 2637 transitions. [2022-11-22 01:24:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:24:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-22 01:24:03,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:03,591 INFO L225 Difference]: With dead ends: 1831 [2022-11-22 01:24:03,592 INFO L226 Difference]: Without dead ends: 1795 [2022-11-22 01:24:03,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:03,603 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 1297 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 5842 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:03,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 5842 Invalid, 761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 757 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-22 01:24:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-11-22 01:24:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1792. [2022-11-22 01:24:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1039 states have (on average 1.2675649663137631) internal successors, (1317), 1102 states have internal predecessors, (1317), 620 states have call successors, (620), 135 states have call predecessors, (620), 132 states have return successors, (635), 599 states have call predecessors, (635), 614 states have call successors, (635) [2022-11-22 01:24:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2572 transitions. [2022-11-22 01:24:03,817 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2572 transitions. Word has length 35 [2022-11-22 01:24:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:03,817 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2572 transitions. [2022-11-22 01:24:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:24:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2572 transitions. [2022-11-22 01:24:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-22 01:24:03,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:03,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-22 01:24:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:24:03,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1915157928, now seen corresponding path program 1 times [2022-11-22 01:24:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:03,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810766305] [2022-11-22 01:24:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:24:05,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810766305] [2022-11-22 01:24:05,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810766305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:05,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:05,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431873193] [2022-11-22 01:24:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:05,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:05,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:05,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:05,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:05,085 INFO L87 Difference]: Start difference. First operand 1792 states and 2572 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 01:24:07,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:11,178 INFO L93 Difference]: Finished difference Result 1798 states and 2577 transitions. [2022-11-22 01:24:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:24:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2022-11-22 01:24:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:11,195 INFO L225 Difference]: With dead ends: 1798 [2022-11-22 01:24:11,196 INFO L226 Difference]: Without dead ends: 1776 [2022-11-22 01:24:11,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:11,200 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 1276 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:11,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 3351 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-22 01:24:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-11-22 01:24:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1776. [2022-11-22 01:24:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1031 states have (on average 1.2657613967022308) internal successors, (1305), 1092 states have internal predecessors, (1305), 614 states have call successors, (614), 132 states have call predecessors, (614), 130 states have return successors, (632), 596 states have call predecessors, (632), 611 states have call successors, (632) [2022-11-22 01:24:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2551 transitions. [2022-11-22 01:24:11,338 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2551 transitions. Word has length 40 [2022-11-22 01:24:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:11,339 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2551 transitions. [2022-11-22 01:24:11,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 01:24:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2551 transitions. [2022-11-22 01:24:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-22 01:24:11,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:11,363 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:11,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:24:11,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1577969495, now seen corresponding path program 1 times [2022-11-22 01:24:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:11,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859047246] [2022-11-22 01:24:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-22 01:24:14,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:14,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859047246] [2022-11-22 01:24:14,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859047246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:14,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:14,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:14,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573926224] [2022-11-22 01:24:14,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:14,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:14,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:14,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:14,136 INFO L87 Difference]: Start difference. First operand 1776 states and 2551 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 01:24:16,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:21,513 INFO L93 Difference]: Finished difference Result 3550 states and 5171 transitions. [2022-11-22 01:24:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:24:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 200 [2022-11-22 01:24:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:21,531 INFO L225 Difference]: With dead ends: 3550 [2022-11-22 01:24:21,531 INFO L226 Difference]: Without dead ends: 1788 [2022-11-22 01:24:21,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:21,547 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 2 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4451 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:21,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4451 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 691 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 01:24:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-22 01:24:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1786. [2022-11-22 01:24:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1038 states have (on average 1.2639691714836223) internal successors, (1312), 1100 states have internal predecessors, (1312), 614 states have call successors, (614), 132 states have call predecessors, (614), 133 states have return successors, (648), 598 states have call predecessors, (648), 611 states have call successors, (648) [2022-11-22 01:24:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2574 transitions. [2022-11-22 01:24:21,680 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2574 transitions. Word has length 200 [2022-11-22 01:24:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:21,682 INFO L495 AbstractCegarLoop]: Abstraction has 1786 states and 2574 transitions. [2022-11-22 01:24:21,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 01:24:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2574 transitions. [2022-11-22 01:24:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-22 01:24:21,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:21,692 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:21,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:24:21,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:21,694 INFO L85 PathProgramCache]: Analyzing trace with hash 701283934, now seen corresponding path program 1 times [2022-11-22 01:24:21,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:21,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261147795] [2022-11-22 01:24:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:21,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-11-22 01:24:26,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:26,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261147795] [2022-11-22 01:24:26,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261147795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:26,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:26,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:24:26,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456760960] [2022-11-22 01:24:26,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:26,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:24:26,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:26,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:24:26,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:26,331 INFO L87 Difference]: Start difference. First operand 1786 states and 2574 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-22 01:24:28,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:34,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:00,689 INFO L93 Difference]: Finished difference Result 2797 states and 4099 transitions. [2022-11-22 01:25:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:25:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 213 [2022-11-22 01:25:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:00,718 INFO L225 Difference]: With dead ends: 2797 [2022-11-22 01:25:00,718 INFO L226 Difference]: Without dead ends: 2787 [2022-11-22 01:25:00,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:25:00,723 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1939 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 5594 mSolverCounterSat, 1135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 6730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 5594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:00,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2241 Valid, 2527 Invalid, 6730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1135 Valid, 5594 Invalid, 1 Unknown, 0 Unchecked, 33.8s Time] [2022-11-22 01:25:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2022-11-22 01:25:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2774. [2022-11-22 01:25:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 1620 states have (on average 1.2666666666666666) internal successors, (2052), 1715 states have internal predecessors, (2052), 952 states have call successors, (952), 197 states have call predecessors, (952), 201 states have return successors, (1059), 930 states have call predecessors, (1059), 949 states have call successors, (1059) [2022-11-22 01:25:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 4063 transitions. [2022-11-22 01:25:00,908 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 4063 transitions. Word has length 213 [2022-11-22 01:25:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:00,909 INFO L495 AbstractCegarLoop]: Abstraction has 2774 states and 4063 transitions. [2022-11-22 01:25:00,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-22 01:25:00,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 4063 transitions. [2022-11-22 01:25:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-22 01:25:00,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:00,920 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 13, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:00,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:25:00,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:00,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1107448668, now seen corresponding path program 1 times [2022-11-22 01:25:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:00,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481889045] [2022-11-22 01:25:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2022-11-22 01:25:03,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:03,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481889045] [2022-11-22 01:25:03,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481889045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:03,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:03,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:25:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171700808] [2022-11-22 01:25:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:03,394 INFO L87 Difference]: Start difference. First operand 2774 states and 4063 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 01:25:05,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:08,299 INFO L93 Difference]: Finished difference Result 5534 states and 8230 transitions. [2022-11-22 01:25:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:08,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 288 [2022-11-22 01:25:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:08,320 INFO L225 Difference]: With dead ends: 5534 [2022-11-22 01:25:08,320 INFO L226 Difference]: Without dead ends: 2774 [2022-11-22 01:25:08,337 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 [2022-11-22 01:25:08,338 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 104 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:08,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2091 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 311 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 01:25:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-11-22 01:25:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2022-11-22 01:25:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 1620 states have (on average 1.2641975308641975) internal successors, (2048), 1715 states have internal predecessors, (2048), 952 states have call successors, (952), 197 states have call predecessors, (952), 201 states have return successors, (1059), 930 states have call predecessors, (1059), 949 states have call successors, (1059) [2022-11-22 01:25:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 4059 transitions. [2022-11-22 01:25:08,520 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 4059 transitions. Word has length 288 [2022-11-22 01:25:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:08,521 INFO L495 AbstractCegarLoop]: Abstraction has 2774 states and 4059 transitions. [2022-11-22 01:25:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 01:25:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 4059 transitions. [2022-11-22 01:25:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-22 01:25:08,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:08,534 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:25:08,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -549015231, now seen corresponding path program 1 times [2022-11-22 01:25:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:08,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550679823] [2022-11-22 01:25:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-11-22 01:25:14,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550679823] [2022-11-22 01:25:14,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550679823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:25:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355793807] [2022-11-22 01:25:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:14,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:14,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:25:14,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:25:14,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:25:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:16,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 4233 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:25:16,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:25:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-22 01:25:17,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:25:17,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355793807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:17,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:25:17,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-22 01:25:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000735338] [2022-11-22 01:25:17,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:17,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:25:17,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:25:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:25:17,764 INFO L87 Difference]: Start difference. First operand 2774 states and 4059 transitions. Second operand has 9 states, 6 states have (on average 17.0) internal successors, (102), 9 states have internal predecessors, (102), 5 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (49), 5 states have call predecessors, (49), 5 states have call successors, (49) [2022-11-22 01:25:19,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:30,226 INFO L93 Difference]: Finished difference Result 5349 states and 7792 transitions. [2022-11-22 01:25:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:25:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 17.0) internal successors, (102), 9 states have internal predecessors, (102), 5 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (49), 5 states have call predecessors, (49), 5 states have call successors, (49) Word has length 298 [2022-11-22 01:25:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:30,248 INFO L225 Difference]: With dead ends: 5349 [2022-11-22 01:25:30,248 INFO L226 Difference]: Without dead ends: 2807 [2022-11-22 01:25:30,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:25:30,267 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 7 mSDsluCounter, 7557 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8649 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:30,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8649 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1649 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-11-22 01:25:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-11-22 01:25:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2798. [2022-11-22 01:25:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 1635 states have (on average 1.2623853211009175) internal successors, (2064), 1727 states have internal predecessors, (2064), 961 states have call successors, (961), 197 states have call predecessors, (961), 201 states have return successors, (1068), 939 states have call predecessors, (1068), 958 states have call successors, (1068) [2022-11-22 01:25:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4093 transitions. [2022-11-22 01:25:30,492 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4093 transitions. Word has length 298 [2022-11-22 01:25:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:30,494 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4093 transitions. [2022-11-22 01:25:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 17.0) internal successors, (102), 9 states have internal predecessors, (102), 5 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (49), 5 states have call predecessors, (49), 5 states have call successors, (49) [2022-11-22 01:25:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4093 transitions. [2022-11-22 01:25:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-22 01:25:30,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:30,508 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 9, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:30,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:25:30,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:25:30,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 334742044, now seen corresponding path program 1 times [2022-11-22 01:25:30,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107797180] [2022-11-22 01:25:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:30,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-22 01:25:37,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:37,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107797180] [2022-11-22 01:25:37,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107797180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:25:37,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945814645] [2022-11-22 01:25:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:37,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:37,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:25:37,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:25:37,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:25:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:39,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 4514 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:25:39,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:25:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-11-22 01:25:41,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:25:41,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945814645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:41,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:25:41,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-11-22 01:25:41,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183927289] [2022-11-22 01:25:41,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:41,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:25:41,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:41,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:25:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:25:41,272 INFO L87 Difference]: Start difference. First operand 2798 states and 4093 transitions. Second operand has 16 states, 11 states have (on average 11.0) internal successors, (121), 12 states have internal predecessors, (121), 5 states have call successors, (57), 2 states have call predecessors, (57), 7 states have return successors, (55), 8 states have call predecessors, (55), 5 states have call successors, (55) [2022-11-22 01:25:43,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:59,502 INFO L93 Difference]: Finished difference Result 5445 states and 7983 transitions. [2022-11-22 01:25:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 01:25:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 11.0) internal successors, (121), 12 states have internal predecessors, (121), 5 states have call successors, (57), 2 states have call predecessors, (57), 7 states have return successors, (55), 8 states have call predecessors, (55), 5 states have call successors, (55) Word has length 330 [2022-11-22 01:25:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:59,528 INFO L225 Difference]: With dead ends: 5445 [2022-11-22 01:25:59,529 INFO L226 Difference]: Without dead ends: 2879 [2022-11-22 01:25:59,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:25:59,545 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 15 mSDsluCounter, 15643 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 16774 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:59,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 16774 Invalid, 3267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3265 Invalid, 1 Unknown, 0 Unchecked, 17.2s Time] [2022-11-22 01:25:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2022-11-22 01:25:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2861. [2022-11-22 01:25:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 1671 states have (on average 1.2591262716935967) internal successors, (2104), 1763 states have internal predecessors, (2104), 982 states have call successors, (982), 197 states have call predecessors, (982), 207 states have return successors, (1152), 966 states have call predecessors, (1152), 979 states have call successors, (1152) [2022-11-22 01:25:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4238 transitions. [2022-11-22 01:25:59,754 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4238 transitions. Word has length 330 [2022-11-22 01:25:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:59,754 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4238 transitions. [2022-11-22 01:25:59,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 11.0) internal successors, (121), 12 states have internal predecessors, (121), 5 states have call successors, (57), 2 states have call predecessors, (57), 7 states have return successors, (55), 8 states have call predecessors, (55), 5 states have call successors, (55) [2022-11-22 01:25:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4238 transitions. [2022-11-22 01:25:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-22 01:25:59,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:59,768 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 9, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:59,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:25:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:59,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1278525609, now seen corresponding path program 1 times [2022-11-22 01:25:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:59,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465467052] [2022-11-22 01:25:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-22 01:26:04,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:04,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465467052] [2022-11-22 01:26:04,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465467052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:26:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909713531] [2022-11-22 01:26:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:04,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:26:04,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:26:04,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:26:04,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71cc7c3-d4d6-4917-b95a-c5f37422cca3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:26:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:07,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 4534 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-22 01:26:07,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:26:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-11-22 01:26:08,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:26:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-11-22 01:26:09,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909713531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:26:09,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1346842407] [2022-11-22 01:26:09,652 INFO L159 IcfgInterpreter]: Started Sifa with 156 locations of interest [2022-11-22 01:26:09,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:26:09,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:26:09,663 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:26:09,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:31:51,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:52,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:52,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:52,402 INFO L217 Elim1Store]: Index analysis took 367 ms [2022-11-22 01:31:52,410 INFO L350 Elim1Store]: Elim1 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 1377 treesize of output 1263 [2022-11-22 01:31:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:53,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:53,972 INFO L217 Elim1Store]: Index analysis took 379 ms [2022-11-22 01:31:53,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1395 treesize of output 1278 [2022-11-22 01:31:55,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:55,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:55,299 INFO L217 Elim1Store]: Index analysis took 279 ms [2022-11-22 01:31:55,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:31:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:56,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:56,377 INFO L217 Elim1Store]: Index analysis took 235 ms [2022-11-22 01:31:56,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:31:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:57,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:57,558 INFO L217 Elim1Store]: Index analysis took 216 ms [2022-11-22 01:31:57,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:31:58,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:58,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:58,576 INFO L217 Elim1Store]: Index analysis took 184 ms [2022-11-22 01:31:58,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:31:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:31:59,463 INFO L217 Elim1Store]: Index analysis took 122 ms [2022-11-22 01:31:59,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:00,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:00,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:00,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:00,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:00,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:00,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:01,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:01,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:01,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:02,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:02,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:02,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:03,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:03,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:03,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:03,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:03,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:03,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:04,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:04,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:04,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:05,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:05,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:05,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:05,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:05,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:05,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:06,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:06,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:07,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-11-22 01:32:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:07,865 INFO L217 Elim1Store]: Index analysis took 103 ms [2022-11-22 01:32:08,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 153 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 152 [2022-11-22 01:32:08,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:08,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:09,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:10,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:32:10,031 INFO L217 Elim1Store]: Index analysis took 1317 ms [2022-11-22 01:32:15,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 67 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 663 treesize of output 566