./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:03:13,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:03:13,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:03:13,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:03:13,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:03:13,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:03:13,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:03:13,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:03:13,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:03:13,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:03:13,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:03:13,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:03:13,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:03:13,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:03:13,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:03:13,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:03:13,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:03:13,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:03:13,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:03:13,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:03:13,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:03:13,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:03:13,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:03:13,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:03:13,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:03:13,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:03:13,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:03:13,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:03:13,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:03:14,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:03:14,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:03:14,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:03:14,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:03:14,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:03:14,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:03:14,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:03:14,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:03:14,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:03:14,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:03:14,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:03:14,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:03:14,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:03:14,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:03:14,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:03:14,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:03:14,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:03:14,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:03:14,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:03:14,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:03:14,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:03:14,036 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:03:14,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:03:14,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:03:14,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:03:14,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:03:14,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:03:14,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:03:14,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:03:14,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:03:14,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:03:14,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:03:14,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:03:14,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:03:14,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:03:14,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:03:14,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:03:14,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:03:14,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:03:14,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:03:14,042 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:03:14,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:03:14,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:03:14,043 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_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-11-02 20:03:14,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:03:14,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:03:14,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:03:14,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:03:14,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:03:14,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-11-02 20:03:14,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/data/40d0401d7/b7be9743a22b4ffdb24a85665f46f989/FLAG1dcb1013a [2022-11-02 20:03:15,346 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:03:15,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-11-02 20:03:15,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/data/40d0401d7/b7be9743a22b4ffdb24a85665f46f989/FLAG1dcb1013a [2022-11-02 20:03:15,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/data/40d0401d7/b7be9743a22b4ffdb24a85665f46f989 [2022-11-02 20:03:15,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:03:15,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:03:15,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:03:15,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:03:15,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:03:15,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:03:15" (1/1) ... [2022-11-02 20:03:15,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1151be1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:15, skipping insertion in model container [2022-11-02 20:03:15,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:03:15" (1/1) ... [2022-11-02 20:03:15,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:03:15,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:03:17,442 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-11-02 20:03:17,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:03:17,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:03:18,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-11-02 20:03:18,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:03:18,349 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:03:18,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18 WrapperNode [2022-11-02 20:03:18,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:03:18,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:03:18,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:03:18,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:03:18,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:18,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:18,837 INFO L138 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7883 [2022-11-02 20:03:18,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:03:18,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:03:18,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:03:18,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:03:18,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:18,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:18,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:18,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:19,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:19,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:19,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:19,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:19,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:03:19,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:03:19,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:03:19,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:03:19,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (1/1) ... [2022-11-02 20:03:19,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:03:19,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:19,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:03:19,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c7ff4f-03b8-4c0b-91ee-23d126bcb260/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:03:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-11-02 20:03:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-11-02 20:03:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-02 20:03:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-02 20:03:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-11-02 20:03:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-11-02 20:03:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-02 20:03:19,467 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-02 20:03:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-11-02 20:03:19,467 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-11-02 20:03:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:03:19,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:03:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-11-02 20:03:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-11-02 20:03:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-11-02 20:03:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-11-02 20:03:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-11-02 20:03:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-11-02 20:03:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-11-02 20:03:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-11-02 20:03:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:03:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:03:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:03:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:03:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-02 20:03:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-02 20:03:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-11-02 20:03:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-11-02 20:03:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-02 20:03:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-02 20:03:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-02 20:03:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-02 20:03:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:03:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-11-02 20:03:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-11-02 20:03:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-02 20:03:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-02 20:03:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-02 20:03:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-02 20:03:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-02 20:03:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-02 20:03:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-11-02 20:03:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-11-02 20:03:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-02 20:03:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-02 20:03:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:03:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-11-02 20:03:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-11-02 20:03:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-02 20:03:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-02 20:03:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:03:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:03:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-02 20:03:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-02 20:03:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-02 20:03:19,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-02 20:03:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-02 20:03:19,477 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-02 20:03:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-02 20:03:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-02 20:03:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-02 20:03:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-02 20:03:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-11-02 20:03:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-11-02 20:03:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-11-02 20:03:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-11-02 20:03:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-11-02 20:03:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-11-02 20:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-02 20:03:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-02 20:03:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-02 20:03:19,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-02 20:03:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-11-02 20:03:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-11-02 20:03:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-02 20:03:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-02 20:03:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-02 20:03:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-02 20:03:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-02 20:03:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-02 20:03:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:03:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-02 20:03:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-02 20:03:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-02 20:03:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-02 20:03:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-02 20:03:19,484 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-02 20:03:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-02 20:03:19,484 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-02 20:03:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-02 20:03:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-02 20:03:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:03:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-02 20:03:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-02 20:03:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-02 20:03:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-02 20:03:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:03:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:03:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-02 20:03:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-02 20:03:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-11-02 20:03:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-11-02 20:03:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-11-02 20:03:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-11-02 20:03:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:03:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-02 20:03:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-02 20:03:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:03:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-11-02 20:03:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-11-02 20:03:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:03:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-02 20:03:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-02 20:03:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-02 20:03:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-02 20:03:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-11-02 20:03:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-11-02 20:03:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-02 20:03:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-02 20:03:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:03:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-02 20:03:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-02 20:03:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:03:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:03:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-02 20:03:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-02 20:03:20,545 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:03:20,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:03:28,450 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:03:28,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:03:28,486 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:03:28,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:03:28 BoogieIcfgContainer [2022-11-02 20:03:28,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:03:28,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:03:28,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:03:28,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:03:28,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:03:15" (1/3) ... [2022-11-02 20:03:28,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a311665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:03:28, skipping insertion in model container [2022-11-02 20:03:28,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:18" (2/3) ... [2022-11-02 20:03:28,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a311665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:03:28, skipping insertion in model container [2022-11-02 20:03:28,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:03:28" (3/3) ... [2022-11-02 20:03:28,504 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-11-02 20:03:28,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:03:28,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:03:28,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:03:28,652 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=PETRI_NET, 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;@c4ce963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:03:28,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:03:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2022-11-02 20:03:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:03:28,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:03:28,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:28,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:03:28,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1921795242, now seen corresponding path program 1 times [2022-11-02 20:03:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:28,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189941009] [2022-11-02 20:03:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:28,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:03:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:03:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:29,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189941009] [2022-11-02 20:03:29,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189941009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:29,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:29,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786201860] [2022-11-02 20:03:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:29,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:29,956 INFO L87 Difference]: Start difference. First operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:03:34,083 INFO L93 Difference]: Finished difference Result 5822 states and 9819 transitions. [2022-11-02 20:03:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:03:34,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-02 20:03:34,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:03:34,128 INFO L225 Difference]: With dead ends: 5822 [2022-11-02 20:03:34,128 INFO L226 Difference]: Without dead ends: 3875 [2022-11-02 20:03:34,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:03:34,170 INFO L413 NwaCegarLoop]: 3629 mSDtfsCounter, 3029 mSDsluCounter, 5030 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 8659 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:03:34,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 8659 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 20:03:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2022-11-02 20:03:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3839. [2022-11-02 20:03:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 2883 states have (on average 1.5202913631633714) internal successors, (4383), 2894 states have internal predecessors, (4383), 843 states have call successors, (843), 113 states have call predecessors, (843), 112 states have return successors, (834), 833 states have call predecessors, (834), 834 states have call successors, (834) [2022-11-02 20:03:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 6060 transitions. [2022-11-02 20:03:34,451 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 6060 transitions. Word has length 31 [2022-11-02 20:03:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:03:34,453 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 6060 transitions. [2022-11-02 20:03:34,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 6060 transitions. [2022-11-02 20:03:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:03:34,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:03:34,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:34,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:03:34,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:03:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244376, now seen corresponding path program 1 times [2022-11-02 20:03:34,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:34,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726556417] [2022-11-02 20:03:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:34,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:03:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:03:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726556417] [2022-11-02 20:03:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726556417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:35,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:35,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463984522] [2022-11-02 20:03:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:35,237 INFO L87 Difference]: Start difference. First operand 3839 states and 6060 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:03:38,923 INFO L93 Difference]: Finished difference Result 11531 states and 18262 transitions. [2022-11-02 20:03:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:03:38,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-02 20:03:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:03:38,982 INFO L225 Difference]: With dead ends: 11531 [2022-11-02 20:03:38,982 INFO L226 Difference]: Without dead ends: 7695 [2022-11-02 20:03:39,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:03:39,104 INFO L413 NwaCegarLoop]: 3646 mSDtfsCounter, 3028 mSDsluCounter, 5030 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3275 SdHoareTripleChecker+Valid, 8676 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:03:39,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3275 Valid, 8676 Invalid, 2021 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [926 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:03:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2022-11-02 20:03:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7643. [2022-11-02 20:03:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 5743 states have (on average 1.5202855650356957) internal successors, (8731), 5758 states have internal predecessors, (8731), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2022-11-02 20:03:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 12072 transitions. [2022-11-02 20:03:39,620 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 12072 transitions. Word has length 32 [2022-11-02 20:03:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:03:39,620 INFO L495 AbstractCegarLoop]: Abstraction has 7643 states and 12072 transitions. [2022-11-02 20:03:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 12072 transitions. [2022-11-02 20:03:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:03:39,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:03:39,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:39,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:03:39,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:03:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash -886111828, now seen corresponding path program 1 times [2022-11-02 20:03:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073067000] [2022-11-02 20:03:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:03:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:03:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:40,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:40,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073067000] [2022-11-02 20:03:40,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073067000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:40,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:40,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310889448] [2022-11-02 20:03:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:40,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:40,400 INFO L87 Difference]: Start difference. First operand 7643 states and 12072 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:43,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:03:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:03:47,106 INFO L93 Difference]: Finished difference Result 22963 states and 36386 transitions. [2022-11-02 20:03:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:03:47,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-02 20:03:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:03:47,237 INFO L225 Difference]: With dead ends: 22963 [2022-11-02 20:03:47,238 INFO L226 Difference]: Without dead ends: 15323 [2022-11-02 20:03:47,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:03:47,299 INFO L413 NwaCegarLoop]: 3543 mSDtfsCounter, 3067 mSDsluCounter, 5010 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 960 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 8553 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:03:47,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 8553 Invalid, 2053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [960 Valid, 1092 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-02 20:03:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2022-11-02 20:03:48,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15239. [2022-11-02 20:03:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15239 states, 11453 states have (on average 1.5200384178817776) internal successors, (17409), 11476 states have internal predecessors, (17409), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2022-11-02 20:03:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 24074 transitions. [2022-11-02 20:03:48,178 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 24074 transitions. Word has length 28 [2022-11-02 20:03:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:03:48,179 INFO L495 AbstractCegarLoop]: Abstraction has 15239 states and 24074 transitions. [2022-11-02 20:03:48,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 24074 transitions. [2022-11-02 20:03:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 20:03:48,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:03:48,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:48,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:03:48,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:03:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:48,184 INFO L85 PathProgramCache]: Analyzing trace with hash 409562076, now seen corresponding path program 1 times [2022-11-02 20:03:48,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:48,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165217275] [2022-11-02 20:03:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:48,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:03:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:03:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:48,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:48,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165217275] [2022-11-02 20:03:48,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165217275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:48,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:48,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698323711] [2022-11-02 20:03:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:48,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:48,917 INFO L87 Difference]: Start difference. First operand 15239 states and 24074 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:03:53,335 INFO L93 Difference]: Finished difference Result 45791 states and 72568 transitions. [2022-11-02 20:03:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:03:53,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-02 20:03:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:03:53,512 INFO L225 Difference]: With dead ends: 45791 [2022-11-02 20:03:53,513 INFO L226 Difference]: Without dead ends: 30555 [2022-11-02 20:03:53,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:03:53,613 INFO L413 NwaCegarLoop]: 3870 mSDtfsCounter, 3044 mSDsluCounter, 5239 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3293 SdHoareTripleChecker+Valid, 9109 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:03:53,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3293 Valid, 9109 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 20:03:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2022-11-02 20:03:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 30407. [2022-11-02 20:03:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 22853 states have (on average 1.519669190040695) internal successors, (34729), 22892 states have internal predecessors, (34729), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2022-11-02 20:03:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 48034 transitions. [2022-11-02 20:03:55,503 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 48034 transitions. Word has length 29 [2022-11-02 20:03:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:03:55,504 INFO L495 AbstractCegarLoop]: Abstraction has 30407 states and 48034 transitions. [2022-11-02 20:03:55,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:03:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 48034 transitions. [2022-11-02 20:03:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 20:03:55,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:03:55,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:55,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:03:55,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:03:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:55,510 INFO L85 PathProgramCache]: Analyzing trace with hash -919829617, now seen corresponding path program 1 times [2022-11-02 20:03:55,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:55,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387576405] [2022-11-02 20:03:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:03:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:56,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:03:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:56,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387576405] [2022-11-02 20:03:56,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387576405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:56,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:56,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655207582] [2022-11-02 20:03:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:56,392 INFO L87 Difference]: Start difference. First operand 30407 states and 48034 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:04:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:01,382 INFO L93 Difference]: Finished difference Result 91375 states and 144800 transitions. [2022-11-02 20:04:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:01,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-11-02 20:04:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:01,744 INFO L225 Difference]: With dead ends: 91375 [2022-11-02 20:04:01,744 INFO L226 Difference]: Without dead ends: 60971 [2022-11-02 20:04:01,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:01,922 INFO L413 NwaCegarLoop]: 3962 mSDtfsCounter, 3011 mSDsluCounter, 5278 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 9240 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:01,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3259 Valid, 9240 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:04:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60971 states. [2022-11-02 20:04:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60971 to 60695. [2022-11-02 20:04:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60695 states, 45613 states have (on average 1.5192379365531756) internal successors, (69297), 45684 states have internal predecessors, (69297), 13289 states have call successors, (13289), 1793 states have call predecessors, (13289), 1792 states have return successors, (13280), 13249 states have call predecessors, (13280), 13280 states have call successors, (13280) [2022-11-02 20:04:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60695 states to 60695 states and 95866 transitions. [2022-11-02 20:04:05,753 INFO L78 Accepts]: Start accepts. Automaton has 60695 states and 95866 transitions. Word has length 34 [2022-11-02 20:04:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:05,753 INFO L495 AbstractCegarLoop]: Abstraction has 60695 states and 95866 transitions. [2022-11-02 20:04:05,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:04:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 60695 states and 95866 transitions. [2022-11-02 20:04:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:04:05,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:05,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:05,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:04:05,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2119451473, now seen corresponding path program 1 times [2022-11-02 20:04:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:05,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596385423] [2022-11-02 20:04:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:04:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:04:06,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596385423] [2022-11-02 20:04:06,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596385423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:06,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:06,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:04:06,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865335558] [2022-11-02 20:04:06,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:06,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:04:06,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:04:06,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:04:06,440 INFO L87 Difference]: Start difference. First operand 60695 states and 95866 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:04:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:13,557 INFO L93 Difference]: Finished difference Result 182271 states and 288776 transitions. [2022-11-02 20:04:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-02 20:04:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:14,284 INFO L225 Difference]: With dead ends: 182271 [2022-11-02 20:04:14,285 INFO L226 Difference]: Without dead ends: 121579 [2022-11-02 20:04:14,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:14,606 INFO L413 NwaCegarLoop]: 3865 mSDtfsCounter, 3018 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3278 SdHoareTripleChecker+Valid, 9079 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3278 Valid, 9079 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:04:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2022-11-02 20:04:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121047. [2022-11-02 20:04:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121047 states, 90957 states have (on average 1.5186186879514496) internal successors, (138129), 91092 states have internal predecessors, (138129), 26505 states have call successors, (26505), 3585 states have call predecessors, (26505), 3584 states have return successors, (26496), 26433 states have call predecessors, (26496), 26496 states have call successors, (26496) [2022-11-02 20:04:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121047 states to 121047 states and 191130 transitions. [2022-11-02 20:04:20,138 INFO L78 Accepts]: Start accepts. Automaton has 121047 states and 191130 transitions. Word has length 32 [2022-11-02 20:04:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 121047 states and 191130 transitions. [2022-11-02 20:04:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:04:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 121047 states and 191130 transitions. [2022-11-02 20:04:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:04:20,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:20,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:04:20,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:04:20,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2080190433, now seen corresponding path program 1 times [2022-11-02 20:04:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321632965] [2022-11-02 20:04:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:20,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:04:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:04:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:04:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:21,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321632965] [2022-11-02 20:04:21,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321632965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:21,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:21,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:04:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045129485] [2022-11-02 20:04:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:04:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:04:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:04:21,204 INFO L87 Difference]: Start difference. First operand 121047 states and 191130 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:04:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:31,781 INFO L93 Difference]: Finished difference Result 363775 states and 576200 transitions. [2022-11-02 20:04:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:04:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-11-02 20:04:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:33,124 INFO L225 Difference]: With dead ends: 363775 [2022-11-02 20:04:33,124 INFO L226 Difference]: Without dead ends: 242731 [2022-11-02 20:04:34,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:04:34,234 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 3003 mSDsluCounter, 5396 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3253 SdHoareTripleChecker+Valid, 9499 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:34,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3253 Valid, 9499 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-02 20:04:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242731 states.