./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--max16065.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ --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 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 --- 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-dbf71c6-m [2022-10-17 10:22:08,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:22:08,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:22:08,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:22:08,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:22:08,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:22:08,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:22:08,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:22:08,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:22:08,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:22:08,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:22:08,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:22:08,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:22:08,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:22:08,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:22:08,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:22:08,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:22:08,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:22:08,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:22:08,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:22:08,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:22:08,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:22:08,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:22:08,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:22:08,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:22:08,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:22:08,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:22:08,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:22:08,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:22:08,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:22:08,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:22:08,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:22:08,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:22:08,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:22:08,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:22:08,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:22:08,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:22:08,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:22:08,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:22:08,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:22:08,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:22:08,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:22:08,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:22:08,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:22:08,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:22:08,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:22:08,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:22:08,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:22:08,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:22:08,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:22:08,834 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:22:08,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:22:08,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:22:08,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:22:08,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:22:08,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:22:08,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:22:08,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:22:08,837 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:22:08,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:22:08,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:22:08,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:22:08,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:22:08,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:08,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:22:08,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:22:08,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:22:08,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:22:08,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:22:08,840 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:22:08,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:22:08,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:22:08,841 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_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-10-17 10:22:09,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:22:09,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:22:09,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:22:09,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:22:09,249 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:22:09,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-10-17 10:22:09,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/data/5f19367c6/9da1627e4aad449ea7968a007f3194a4/FLAG27cde8449 [2022-10-17 10:22:10,334 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:22:10,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-10-17 10:22:10,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/data/5f19367c6/9da1627e4aad449ea7968a007f3194a4/FLAG27cde8449 [2022-10-17 10:22:10,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/data/5f19367c6/9da1627e4aad449ea7968a007f3194a4 [2022-10-17 10:22:10,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:22:10,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:22:10,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:10,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:22:10,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:22:10,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:10" (1/1) ... [2022-10-17 10:22:10,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667b6510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:10, skipping insertion in model container [2022-10-17 10:22:10,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:10" (1/1) ... [2022-10-17 10:22:10,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:22:10,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:22:12,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-10-17 10:22:12,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:12,311 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:22:12,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-10-17 10:22:12,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:12,874 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:22:12,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12 WrapperNode [2022-10-17 10:22:12,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:12,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:12,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:22:12,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:22:12,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:12,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,158 INFO L138 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5217 [2022-10-17 10:22:13,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:13,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:22:13,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:22:13,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:22:13,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:22:13,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:22:13,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:22:13,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:22:13,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (1/1) ... [2022-10-17 10:22:13,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:13,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:22:13,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:22:13,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:22:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-10-17 10:22:13,594 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-10-17 10:22:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:22:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-10-17 10:22:13,595 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-10-17 10:22:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-10-17 10:22:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-10-17 10:22:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-10-17 10:22:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-10-17 10:22:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-10-17 10:22:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-10-17 10:22:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-10-17 10:22:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-10-17 10:22:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-10-17 10:22:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-10-17 10:22:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:22:13,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:22:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-10-17 10:22:13,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-10-17 10:22:13,599 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-10-17 10:22:13,599 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-10-17 10:22:13,599 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-10-17 10:22:13,600 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-10-17 10:22:13,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:22:13,600 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:22:13,600 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:22:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:22:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:22:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:22:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:22:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:22:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:22:13,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:22:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:22:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:22:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:22:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-10-17 10:22:13,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-10-17 10:22:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-10-17 10:22:13,604 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-10-17 10:22:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:22:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:22:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:22:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-10-17 10:22:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-10-17 10:22:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:22:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-10-17 10:22:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-10-17 10:22:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:22:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:22:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-10-17 10:22:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-10-17 10:22:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 10:22:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 10:22:14,402 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:22:14,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:22:21,400 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:22:21,420 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:22:21,420 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:22:21,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:22:21 BoogieIcfgContainer [2022-10-17 10:22:21,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:22:21,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:22:21,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:22:21,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:22:21,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:22:10" (1/3) ... [2022-10-17 10:22:21,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70078069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:22:21, skipping insertion in model container [2022-10-17 10:22:21,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:12" (2/3) ... [2022-10-17 10:22:21,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70078069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:22:21, skipping insertion in model container [2022-10-17 10:22:21,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:22:21" (3/3) ... [2022-10-17 10:22:21,435 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-10-17 10:22:21,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:22:21,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:22:21,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:22:21,574 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;@26f427c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:22:21,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:22:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 896 states have (on average 1.6049107142857142) internal successors, (1438), 903 states have internal predecessors, (1438), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2022-10-17 10:22:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 10:22:21,604 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:21,605 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] [2022-10-17 10:22:21,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2019820294, now seen corresponding path program 1 times [2022-10-17 10:22:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:21,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184990253] [2022-10-17 10:22:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:22:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:22:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:23,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:23,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184990253] [2022-10-17 10:22:23,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184990253] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:23,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:23,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:22:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567825847] [2022-10-17 10:22:23,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:23,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:22:23,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:22:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:22:23,079 INFO L87 Difference]: Start difference. First operand has 1101 states, 896 states have (on average 1.6049107142857142) internal successors, (1438), 903 states have internal predecessors, (1438), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) 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) [2022-10-17 10:22:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:25,235 INFO L93 Difference]: Finished difference Result 3401 states and 5976 transitions. [2022-10-17 10:22:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:22:25,238 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 [2022-10-17 10:22:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:25,301 INFO L225 Difference]: With dead ends: 3401 [2022-10-17 10:22:25,301 INFO L226 Difference]: Without dead ends: 2295 [2022-10-17 10:22:25,318 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 [2022-10-17 10:22:25,322 INFO L413 NwaCegarLoop]: 2023 mSDtfsCounter, 1952 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:22:25,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 5276 Invalid, 859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [439 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:22:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-10-17 10:22:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2166. [2022-10-17 10:22:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 1768 states have (on average 1.6057692307692308) internal successors, (2839), 1773 states have internal predecessors, (2839), 357 states have call successors, (357), 41 states have call predecessors, (357), 40 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2022-10-17 10:22:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3547 transitions. [2022-10-17 10:22:25,627 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3547 transitions. Word has length 33 [2022-10-17 10:22:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:25,628 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3547 transitions. [2022-10-17 10:22:25,628 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) [2022-10-17 10:22:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3547 transitions. [2022-10-17 10:22:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:22:25,633 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:25,633 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] [2022-10-17 10:22:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:22:25,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1851303095, now seen corresponding path program 1 times [2022-10-17 10:22:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:25,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327596941] [2022-10-17 10:22:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:22:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:22:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:26,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327596941] [2022-10-17 10:22:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327596941] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:26,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:26,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:22:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283124814] [2022-10-17 10:22:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:22:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:22:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:22:26,579 INFO L87 Difference]: Start difference. First operand 2166 states and 3547 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) [2022-10-17 10:22:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:28,373 INFO L93 Difference]: Finished difference Result 6708 states and 11239 transitions. [2022-10-17 10:22:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:22:28,374 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 [2022-10-17 10:22:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:28,419 INFO L225 Difference]: With dead ends: 6708 [2022-10-17 10:22:28,420 INFO L226 Difference]: Without dead ends: 4545 [2022-10-17 10:22:28,431 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 [2022-10-17 10:22:28,433 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 1945 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 5331 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:22:28,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 5331 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:22:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-10-17 10:22:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4302. [2022-10-17 10:22:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 3515 states have (on average 1.6062588904694168) internal successors, (5646), 3520 states have internal predecessors, (5646), 706 states have call successors, (706), 81 states have call predecessors, (706), 80 states have return successors, (700), 700 states have call predecessors, (700), 700 states have call successors, (700) [2022-10-17 10:22:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 7052 transitions. [2022-10-17 10:22:28,746 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 7052 transitions. Word has length 34 [2022-10-17 10:22:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:28,747 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 7052 transitions. [2022-10-17 10:22:28,747 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) [2022-10-17 10:22:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 7052 transitions. [2022-10-17 10:22:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-17 10:22:28,752 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:28,752 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] [2022-10-17 10:22:28,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:22:28,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1553931897, now seen corresponding path program 1 times [2022-10-17 10:22:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220425964] [2022-10-17 10:22:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:22:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:22:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:29,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220425964] [2022-10-17 10:22:29,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220425964] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:29,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:29,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:22:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520949259] [2022-10-17 10:22:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:22:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:22:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:22:29,511 INFO L87 Difference]: Start difference. First operand 4302 states and 7052 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-10-17 10:22:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:31,386 INFO L93 Difference]: Finished difference Result 13332 states and 22354 transitions. [2022-10-17 10:22:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:22:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 37 [2022-10-17 10:22:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:31,470 INFO L225 Difference]: With dead ends: 13332 [2022-10-17 10:22:31,470 INFO L226 Difference]: Without dead ends: 9033 [2022-10-17 10:22:31,492 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 [2022-10-17 10:22:31,493 INFO L413 NwaCegarLoop]: 2063 mSDtfsCounter, 1939 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:22:31,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 5374 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:22:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-10-17 10:22:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8562. [2022-10-17 10:22:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8562 states, 6999 states have (on average 1.6062294613516217) internal successors, (11242), 7004 states have internal predecessors, (11242), 1402 states have call successors, (1402), 161 states have call predecessors, (1402), 160 states have return successors, (1396), 1396 states have call predecessors, (1396), 1396 states have call successors, (1396) [2022-10-17 10:22:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 14040 transitions. [2022-10-17 10:22:32,093 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 14040 transitions. Word has length 37 [2022-10-17 10:22:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:32,095 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 14040 transitions. [2022-10-17 10:22:32,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-10-17 10:22:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 14040 transitions. [2022-10-17 10:22:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 10:22:32,100 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:32,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:32,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:22:32,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:32,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1378079213, now seen corresponding path program 1 times [2022-10-17 10:22:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:32,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411048430] [2022-10-17 10:22:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:22:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:22:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:32,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411048430] [2022-10-17 10:22:32,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411048430] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:32,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:32,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:22:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722436214] [2022-10-17 10:22:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:32,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:22:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:22:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:22:32,757 INFO L87 Difference]: Start difference. First operand 8562 states and 14040 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-10-17 10:22:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:34,957 INFO L93 Difference]: Finished difference Result 26544 states and 44514 transitions. [2022-10-17 10:22:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:22:34,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 41 [2022-10-17 10:22:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:35,091 INFO L225 Difference]: With dead ends: 26544 [2022-10-17 10:22:35,091 INFO L226 Difference]: Without dead ends: 17985 [2022-10-17 10:22:35,138 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 [2022-10-17 10:22:35,140 INFO L413 NwaCegarLoop]: 2139 mSDtfsCounter, 1933 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 5518 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:22:35,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 5518 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:22:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17985 states. [2022-10-17 10:22:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17985 to 17058. [2022-10-17 10:22:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17058 states, 13947 states have (on average 1.605936760593676) internal successors, (22398), 13952 states have internal predecessors, (22398), 2790 states have call successors, (2790), 321 states have call predecessors, (2790), 320 states have return successors, (2784), 2784 states have call predecessors, (2784), 2784 states have call successors, (2784) [2022-10-17 10:22:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17058 states to 17058 states and 27972 transitions. [2022-10-17 10:22:36,478 INFO L78 Accepts]: Start accepts. Automaton has 17058 states and 27972 transitions. Word has length 41 [2022-10-17 10:22:36,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:36,479 INFO L495 AbstractCegarLoop]: Abstraction has 17058 states and 27972 transitions. [2022-10-17 10:22:36,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-10-17 10:22:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 17058 states and 27972 transitions. [2022-10-17 10:22:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-17 10:22:36,484 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:36,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:22:36,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1020050902, now seen corresponding path program 1 times [2022-10-17 10:22:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:36,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134812157] [2022-10-17 10:22:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:36,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:36,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:36,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134812157] [2022-10-17 10:22:36,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:22:36,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096638828] [2022-10-17 10:22:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:36,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:22:36,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:22:36,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:22:36,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39451547-a25e-4283-9217-498730d5ba82/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process