./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN --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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- 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-6b4ec56 [2022-11-20 12:27:16,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:27:16,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:27:16,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:27:16,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:27:16,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:27:16,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:27:16,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:27:16,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:27:16,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:27:16,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:27:16,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:27:16,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:27:16,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:27:16,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:27:16,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:27:16,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:27:16,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:27:16,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:27:16,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:27:16,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:27:16,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:27:16,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:27:16,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:27:16,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:27:16,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:27:16,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:27:16,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:27:16,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:27:16,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:27:16,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:27:16,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:27:16,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:27:16,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:27:16,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:27:16,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:27:16,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:27:16,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:27:16,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:27:16,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:27:16,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:27:16,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:27:16,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:27:16,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:27:16,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:27:16,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:27:16,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:27:16,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:27:16,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:27:16,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:27:16,966 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:27:16,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:27:16,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:27:16,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:27:16,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:27:16,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:27:16,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:27:16,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:27:16,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:27:16,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:27:16,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:27:16,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:27:16,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:27:16,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:27:16,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:27:16,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:27:16,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:27:16,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:27:16,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:27:16,972 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:27:16,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:27:16,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:27:16,973 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_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-11-20 12:27:17,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:27:17,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:27:17,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:27:17,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:27:17,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:27:17,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-20 12:27:20,495 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:27:21,037 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:27:21,038 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-20 12:27:21,089 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/data/d7e3b8660/df0ee6bc000c4c0aae8fa46068dd5bc8/FLAG5afec0141 [2022-11-20 12:27:21,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/data/d7e3b8660/df0ee6bc000c4c0aae8fa46068dd5bc8 [2022-11-20 12:27:21,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:27:21,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:27:21,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:27:21,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:27:21,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:27:21,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:27:21" (1/1) ... [2022-11-20 12:27:21,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6965fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:21, skipping insertion in model container [2022-11-20 12:27:21,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:27:21" (1/1) ... [2022-11-20 12:27:21,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:27:21,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:27:22,278 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_cef43317-ed2f-4131-9706-ec688b1a4372/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-20 12:27:22,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:27:22,423 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:27:22,705 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_cef43317-ed2f-4131-9706-ec688b1a4372/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-20 12:27:22,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:27:22,840 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:27:22,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22 WrapperNode [2022-11-20 12:27:22,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:27:22,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:27:22,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:27:22,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:27:22,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:22,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,168 INFO L138 Inliner]: procedures = 138, calls = 1444, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3765 [2022-11-20 12:27:23,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:27:23,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:27:23,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:27:23,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:27:23,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:27:23,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:27:23,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:27:23,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:27:23,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (1/1) ... [2022-11-20 12:27:23,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:27:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:23,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:27:23,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef43317-ed2f-4131-9706-ec688b1a4372/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:27:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-11-20 12:27:23,507 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-11-20 12:27:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:27:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-11-20 12:27:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-11-20 12:27:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-20 12:27:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-20 12:27:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-20 12:27:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-20 12:27:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-11-20 12:27:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-11-20 12:27:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:27:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:27:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:27:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:27:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:27:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:27:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:27:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:27:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:27:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:27:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-20 12:27:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-20 12:27:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 12:27:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 12:27:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-11-20 12:27:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-11-20 12:27:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-11-20 12:27:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-11-20 12:27:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-11-20 12:27:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-11-20 12:27:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:27:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:27:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:27:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-20 12:27:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-20 12:27:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-20 12:27:23,514 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-20 12:27:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:27:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-11-20 12:27:23,514 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-11-20 12:27:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-20 12:27:23,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-20 12:27:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:27:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:27:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-11-20 12:27:23,516 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-11-20 12:27:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-11-20 12:27:23,516 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-11-20 12:27:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-11-20 12:27:23,516 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-11-20 12:27:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:27:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-20 12:27:23,517 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-20 12:27:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-20 12:27:23,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-20 12:27:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:27:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:27:23,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-11-20 12:27:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-11-20 12:27:23,518 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 12:27:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 12:27:24,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:27:24,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:27:28,035 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:27:28,053 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:27:28,060 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-20 12:27:28,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:27:28 BoogieIcfgContainer [2022-11-20 12:27:28,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:27:28,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:27:28,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:27:28,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:27:28,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:27:21" (1/3) ... [2022-11-20 12:27:28,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653990af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:27:28, skipping insertion in model container [2022-11-20 12:27:28,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:22" (2/3) ... [2022-11-20 12:27:28,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653990af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:27:28, skipping insertion in model container [2022-11-20 12:27:28,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:27:28" (3/3) ... [2022-11-20 12:27:28,079 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-20 12:27:28,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:27:28,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:27:28,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:27:28,211 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;@4c2f9527, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:27:28,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:27:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 870 states, 673 states have (on average 1.5185735512630014) internal successors, (1022), 680 states have internal predecessors, (1022), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-11-20 12:27:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:27:28,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:28,251 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] [2022-11-20 12:27:28,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -988417633, now seen corresponding path program 1 times [2022-11-20 12:27:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:28,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700809737] [2022-11-20 12:27:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:28,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:27:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:29,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700809737] [2022-11-20 12:27:29,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700809737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:29,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:29,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408989111] [2022-11-20 12:27:29,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:29,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:29,183 INFO L87 Difference]: Start difference. First operand has 870 states, 673 states have (on average 1.5185735512630014) internal successors, (1022), 680 states have internal predecessors, (1022), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-20 12:27:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:31,633 INFO L93 Difference]: Finished difference Result 2722 states and 4469 transitions. [2022-11-20 12:27:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:27:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 35 [2022-11-20 12:27:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:31,684 INFO L225 Difference]: With dead ends: 2722 [2022-11-20 12:27:31,685 INFO L226 Difference]: Without dead ends: 1847 [2022-11-20 12:27:31,702 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 [2022-11-20 12:27:31,708 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1429 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:31,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 3881 Invalid, 1000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [389 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 12:27:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-11-20 12:27:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1700. [2022-11-20 12:27:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1319 states have (on average 1.5072024260803638) internal successors, (1988), 1324 states have internal predecessors, (1988), 332 states have call successors, (332), 49 states have call predecessors, (332), 48 states have return successors, (326), 326 states have call predecessors, (326), 326 states have call successors, (326) [2022-11-20 12:27:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2646 transitions. [2022-11-20 12:27:31,938 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2646 transitions. Word has length 35 [2022-11-20 12:27:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:31,945 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2646 transitions. [2022-11-20 12:27:31,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-20 12:27:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2646 transitions. [2022-11-20 12:27:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 12:27:31,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:31,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:31,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:27:31,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:31,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1289268485, now seen corresponding path program 1 times [2022-11-20 12:27:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:31,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736366419] [2022-11-20 12:27:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:27:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:32,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736366419] [2022-11-20 12:27:32,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736366419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:32,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:32,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729842662] [2022-11-20 12:27:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:32,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:32,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:32,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:32,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:32,308 INFO L87 Difference]: Start difference. First operand 1700 states and 2646 transitions. 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:27:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:34,484 INFO L93 Difference]: Finished difference Result 5344 states and 8408 transitions. [2022-11-20 12:27:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:27:34,485 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-20 12:27:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:34,511 INFO L225 Difference]: With dead ends: 5344 [2022-11-20 12:27:34,511 INFO L226 Difference]: Without dead ends: 3647 [2022-11-20 12:27:34,519 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 [2022-11-20 12:27:34,521 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1434 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:34,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3903 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:27:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2022-11-20 12:27:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3368. [2022-11-20 12:27:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2615 states have (on average 1.5074569789674952) internal successors, (3942), 2620 states have internal predecessors, (3942), 656 states have call successors, (656), 97 states have call predecessors, (656), 96 states have return successors, (650), 650 states have call predecessors, (650), 650 states have call successors, (650) [2022-11-20 12:27:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5248 transitions. [2022-11-20 12:27:34,715 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5248 transitions. Word has length 30 [2022-11-20 12:27:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:34,716 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 5248 transitions. [2022-11-20 12:27:34,716 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:27:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5248 transitions. [2022-11-20 12:27:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:27:34,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:34,719 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] [2022-11-20 12:27:34,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:27:34,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1841406617, now seen corresponding path program 1 times [2022-11-20 12:27:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056462516] [2022-11-20 12:27:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:34,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:27:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:35,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056462516] [2022-11-20 12:27:35,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056462516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:35,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:35,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989506927] [2022-11-20 12:27:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:35,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:35,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:35,123 INFO L87 Difference]: Start difference. First operand 3368 states and 5248 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 12:27:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:37,192 INFO L93 Difference]: Finished difference Result 10586 states and 16666 transitions. [2022-11-20 12:27:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:27:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 36 [2022-11-20 12:27:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:37,235 INFO L225 Difference]: With dead ends: 10586 [2022-11-20 12:27:37,235 INFO L226 Difference]: Without dead ends: 7221 [2022-11-20 12:27:37,250 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 [2022-11-20 12:27:37,253 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1424 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:37,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 3920 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:27:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7221 states. [2022-11-20 12:27:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7221 to 6678. [2022-11-20 12:27:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6678 states, 5187 states have (on average 1.5064584538268748) internal successors, (7814), 5192 states have internal predecessors, (7814), 1298 states have call successors, (1298), 193 states have call predecessors, (1298), 192 states have return successors, (1292), 1292 states have call predecessors, (1292), 1292 states have call successors, (1292) [2022-11-20 12:27:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6678 states to 6678 states and 10404 transitions. [2022-11-20 12:27:37,644 INFO L78 Accepts]: Start accepts. Automaton has 6678 states and 10404 transitions. Word has length 36 [2022-11-20 12:27:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:37,644 INFO L495 AbstractCegarLoop]: Abstraction has 6678 states and 10404 transitions. [2022-11-20 12:27:37,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 12:27:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6678 states and 10404 transitions. [2022-11-20 12:27:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 12:27:37,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:37,646 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] [2022-11-20 12:27:37,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:27:37,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -57328563, now seen corresponding path program 1 times [2022-11-20 12:27:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881309412] [2022-11-20 12:27:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:37,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:27:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:37,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:37,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:37,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881309412] [2022-11-20 12:27:37,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881309412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:37,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:37,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114761136] [2022-11-20 12:27:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:37,991 INFO L87 Difference]: Start difference. First operand 6678 states and 10404 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-11-20 12:27:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:40,304 INFO L93 Difference]: Finished difference Result 21036 states and 33118 transitions. [2022-11-20 12:27:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:27:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 33 [2022-11-20 12:27:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:40,396 INFO L225 Difference]: With dead ends: 21036 [2022-11-20 12:27:40,396 INFO L226 Difference]: Without dead ends: 14361 [2022-11-20 12:27:40,427 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 [2022-11-20 12:27:40,428 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 1434 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:40,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3955 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:27:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14361 states. [2022-11-20 12:27:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14361 to 13290. [2022-11-20 12:27:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13290 states, 10323 states have (on average 1.5055700862152475) internal successors, (15542), 10328 states have internal predecessors, (15542), 2582 states have call successors, (2582), 385 states have call predecessors, (2582), 384 states have return successors, (2576), 2576 states have call predecessors, (2576), 2576 states have call successors, (2576) [2022-11-20 12:27:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13290 states to 13290 states and 20700 transitions. [2022-11-20 12:27:41,362 INFO L78 Accepts]: Start accepts. Automaton has 13290 states and 20700 transitions. Word has length 33 [2022-11-20 12:27:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:41,363 INFO L495 AbstractCegarLoop]: Abstraction has 13290 states and 20700 transitions. [2022-11-20 12:27:41,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-11-20 12:27:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13290 states and 20700 transitions. [2022-11-20 12:27:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 12:27:41,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:41,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:41,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:27:41,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash -978427454, now seen corresponding path program 1 times [2022-11-20 12:27:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829741911] [2022-11-20 12:27:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:27:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:41,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:41,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829741911] [2022-11-20 12:27:41,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829741911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:41,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:41,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:41,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548040613] [2022-11-20 12:27:41,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:41,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:41,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:41,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:41,654 INFO L87 Difference]: Start difference. First operand 13290 states and 20700 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-11-20 12:27:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:44,466 INFO L93 Difference]: Finished difference Result 41880 states and 65902 transitions. [2022-11-20 12:27:44,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:27:44,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 30 [2022-11-20 12:27:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:44,711 INFO L225 Difference]: With dead ends: 41880 [2022-11-20 12:27:44,722 INFO L226 Difference]: Without dead ends: 28593 [2022-11-20 12:27:44,780 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 [2022-11-20 12:27:44,781 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 1437 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:44,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 3973 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:27:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28593 states. [2022-11-20 12:27:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28593 to 26466. [2022-11-20 12:27:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26466 states, 20555 states have (on average 1.5045487715884214) internal successors, (30926), 20560 states have internal predecessors, (30926), 5142 states have call successors, (5142), 769 states have call predecessors, (5142), 768 states have return successors, (5136), 5136 states have call predecessors, (5136), 5136 states have call successors, (5136) [2022-11-20 12:27:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26466 states to 26466 states and 41204 transitions. [2022-11-20 12:27:46,596 INFO L78 Accepts]: Start accepts. Automaton has 26466 states and 41204 transitions. Word has length 30 [2022-11-20 12:27:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:46,596 INFO L495 AbstractCegarLoop]: Abstraction has 26466 states and 41204 transitions. [2022-11-20 12:27:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-11-20 12:27:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26466 states and 41204 transitions. [2022-11-20 12:27:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 12:27:46,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:46,600 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] [2022-11-20 12:27:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:27:46,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -458413407, now seen corresponding path program 1 times [2022-11-20 12:27:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:46,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804853066] [2022-11-20 12:27:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:27:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:46,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804853066] [2022-11-20 12:27:46,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804853066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:46,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:46,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153942517] [2022-11-20 12:27:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:46,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:46,905 INFO L87 Difference]: Start difference. First operand 26466 states and 41204 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) [2022-11-20 12:27:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:50,772 INFO L93 Difference]: Finished difference Result 83424 states and 131190 transitions. [2022-11-20 12:27:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:27:50,773 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 [2022-11-20 12:27:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:51,302 INFO L225 Difference]: With dead ends: 83424 [2022-11-20 12:27:51,303 INFO L226 Difference]: Without dead ends: 56961 [2022-11-20 12:27:51,405 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 [2022-11-20 12:27:51,406 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1433 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:51,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 3992 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:27:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56961 states. [2022-11-20 12:27:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56961 to 52722. [2022-11-20 12:27:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52722 states, 40939 states have (on average 1.5034563619042967) internal successors, (61550), 40944 states have internal predecessors, (61550), 10246 states have call successors, (10246), 1537 states have call predecessors, (10246), 1536 states have return successors, (10240), 10240 states have call predecessors, (10240), 10240 states have call successors, (10240) [2022-11-20 12:27:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52722 states to 52722 states and 82036 transitions. [2022-11-20 12:27:54,752 INFO L78 Accepts]: Start accepts. Automaton has 52722 states and 82036 transitions. Word has length 34 [2022-11-20 12:27:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:54,755 INFO L495 AbstractCegarLoop]: Abstraction has 52722 states and 82036 transitions. [2022-11-20 12:27:54,755 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) [2022-11-20 12:27:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 52722 states and 82036 transitions. [2022-11-20 12:27:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 12:27:54,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:54,756 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] [2022-11-20 12:27:54,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:27:54,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1102704600, now seen corresponding path program 1 times [2022-11-20 12:27:54,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:54,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697294982] [2022-11-20 12:27:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:54,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:27:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:27:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:55,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697294982] [2022-11-20 12:27:55,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697294982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:55,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:55,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:27:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440528262] [2022-11-20 12:27:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:27:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:27:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:27:55,013 INFO L87 Difference]: Start difference. First operand 52722 states and 82036 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:28:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:01,127 INFO L93 Difference]: Finished difference Result 166096 states and 261014 transitions. [2022-11-20 12:28:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:28:01,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-20 12:28:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:01,832 INFO L225 Difference]: With dead ends: 166096 [2022-11-20 12:28:01,832 INFO L226 Difference]: Without dead ends: 113377 [2022-11-20 12:28:02,040 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 [2022-11-20 12:28:02,042 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1433 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4011 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 4011 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:28:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113377 states. [2022-11-20 12:28:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113377 to 104914. [2022-11-20 12:28:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104914 states, 81419 states have (on average 1.5023274665618591) internal successors, (122318), 81424 states have internal predecessors, (122318), 20422 states have call successors, (20422), 3073 states have call predecessors, (20422), 3072 states have return successors, (20416), 20416 states have call predecessors, (20416), 20416 states have call successors, (20416) [2022-11-20 12:28:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104914 states to 104914 states and 163156 transitions. [2022-11-20 12:28:07,732 INFO L78 Accepts]: Start accepts. Automaton has 104914 states and 163156 transitions. Word has length 29 [2022-11-20 12:28:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:07,732 INFO L495 AbstractCegarLoop]: Abstraction has 104914 states and 163156 transitions. [2022-11-20 12:28:07,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:28:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 104914 states and 163156 transitions. [2022-11-20 12:28:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 12:28:07,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:07,740 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] [2022-11-20 12:28:07,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:28:07,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash 957472724, now seen corresponding path program 1 times [2022-11-20 12:28:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355794719] [2022-11-20 12:28:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:28:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:28:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:28:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:08,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355794719] [2022-11-20 12:28:08,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355794719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:08,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:08,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:28:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067957693] [2022-11-20 12:28:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:08,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:28:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:28:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:08,017 INFO L87 Difference]: Start difference. First operand 104914 states and 163156 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) [2022-11-20 12:28:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:17,665 INFO L93 Difference]: Finished difference Result 330352 states and 518646 transitions. [2022-11-20 12:28:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:28:17,665 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 [2022-11-20 12:28:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:18,892 INFO L225 Difference]: With dead ends: 330352 [2022-11-20 12:28:18,893 INFO L226 Difference]: Without dead ends: 225441 [2022-11-20 12:28:19,853 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 [2022-11-20 12:28:19,855 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1422 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:19,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 4031 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:28:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225441 states.