./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.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_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/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_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/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_53112c56-40ce-44c6-96fe-e8bff7d44fc3/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 c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- 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 10:37:24,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:37:24,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:37:24,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:37:24,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:37:24,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:37:24,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:37:24,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:37:24,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:37:24,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:37:24,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:37:24,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:37:24,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:37:24,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:37:24,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:37:24,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:37:24,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:37:24,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:37:24,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:37:24,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:37:24,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:37:24,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:37:24,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:37:24,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:37:24,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:37:24,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:37:24,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:37:24,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:37:24,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:37:24,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:37:24,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:37:24,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:37:24,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:37:24,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:37:24,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:37:24,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:37:24,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:37:24,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:37:24,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:37:24,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:37:24,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:37:24,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:37:24,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:37:24,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:37:24,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:37:24,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:37:24,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:37:24,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:37:24,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:37:24,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:37:24,857 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:37:24,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:37:24,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:37:24,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:37:24,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:37:24,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:37:24,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:37:24,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:37:24,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:37:24,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:37:24,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:37:24,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:37:24,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:37:24,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:37:24,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:37:24,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:37:24,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:37:24,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:37:24,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:37:24,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:37:24,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:37:24,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:37:24,863 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_53112c56-40ce-44c6-96fe-e8bff7d44fc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2022-10-17 10:37:25,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:37:25,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:37:25,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:37:25,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:37:25,221 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:37:25,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-10-17 10:37:25,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/data/433703131/5585157ec92a412fad0b4bb1346fdbf1/FLAG47917f884 [2022-10-17 10:37:26,187 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:37:26,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-10-17 10:37:26,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/data/433703131/5585157ec92a412fad0b4bb1346fdbf1/FLAG47917f884 [2022-10-17 10:37:26,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/data/433703131/5585157ec92a412fad0b4bb1346fdbf1 [2022-10-17 10:37:26,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:37:26,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:37:26,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:37:26,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:37:26,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:37:26,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:37:26" (1/1) ... [2022-10-17 10:37:26,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65448656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:26, skipping insertion in model container [2022-10-17 10:37:26,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:37:26" (1/1) ... [2022-10-17 10:37:26,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:37:26,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:37:27,750 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_53112c56-40ce-44c6-96fe-e8bff7d44fc3/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2022-10-17 10:37:28,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:37:28,891 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:37:29,037 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_53112c56-40ce-44c6-96fe-e8bff7d44fc3/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2022-10-17 10:37:29,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:37:29,535 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:37:29,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29 WrapperNode [2022-10-17 10:37:29,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:37:29,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:37:29,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:37:29,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:37:29,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:29,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:29,839 INFO L138 Inliner]: procedures = 256, calls = 2398, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3947 [2022-10-17 10:37:29,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:37:29,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:37:29,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:37:29,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:37:29,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:29,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:29,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:29,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:30,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:30,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:30,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:30,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:30,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:37:30,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:37:30,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:37:30,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:37:30,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (1/1) ... [2022-10-17 10:37:30,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:37:30,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:37:30,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:37:30,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53112c56-40ce-44c6-96fe-e8bff7d44fc3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:37:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-10-17 10:37:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-10-17 10:37:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-17 10:37:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-17 10:37:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-17 10:37:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-17 10:37:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-17 10:37:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:37:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:37:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:37:30,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:37:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-10-17 10:37:30,261 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-10-17 10:37:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 10:37:30,262 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 10:37:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-10-17 10:37:30,262 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-10-17 10:37:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:37:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:37:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-10-17 10:37:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-10-17 10:37:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-10-17 10:37:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-10-17 10:37:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:37:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:37:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:37:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:37:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-10-17 10:37:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-10-17 10:37:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-10-17 10:37:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-10-17 10:37:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2022-10-17 10:37:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2022-10-17 10:37:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:37:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:37:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:37:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:37:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 10:37:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 10:37:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2022-10-17 10:37:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2022-10-17 10:37:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:37:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-10-17 10:37:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-10-17 10:37:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:37:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-10-17 10:37:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-10-17 10:37:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-10-17 10:37:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-10-17 10:37:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:37:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:37:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 10:37:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 10:37:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:37:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:37:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-17 10:37:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-17 10:37:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-10-17 10:37:30,273 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-10-17 10:37:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-10-17 10:37:30,274 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-10-17 10:37:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-17 10:37:30,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-17 10:37:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:37:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 10:37:30,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 10:37:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 10:37:30,275 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 10:37:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-10-17 10:37:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-10-17 10:37:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 10:37:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 10:37:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:37:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-10-17 10:37:30,277 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-10-17 10:37:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-10-17 10:37:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-10-17 10:37:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:37:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-10-17 10:37:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-10-17 10:37:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-10-17 10:37:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-10-17 10:37:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:37:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:37:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2022-10-17 10:37:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2022-10-17 10:37:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 10:37:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 10:37:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 10:37:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 10:37:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-10-17 10:37:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-10-17 10:37:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:37:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:37:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:37:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-10-17 10:37:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-10-17 10:37:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-10-17 10:37:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-10-17 10:37:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-10-17 10:37:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-10-17 10:37:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:37:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:37:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2022-10-17 10:37:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2022-10-17 10:37:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:37:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-10-17 10:37:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-10-17 10:37:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-10-17 10:37:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-10-17 10:37:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2022-10-17 10:37:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2022-10-17 10:37:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-17 10:37:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-17 10:37:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:37:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2022-10-17 10:37:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2022-10-17 10:37:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:37:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-10-17 10:37:30,292 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-10-17 10:37:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 10:37:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-10-17 10:37:30,293 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-10-17 10:37:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-10-17 10:37:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-10-17 10:37:30,296 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-10-17 10:37:30,296 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-10-17 10:37:30,297 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-17 10:37:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-17 10:37:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2022-10-17 10:37:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2022-10-17 10:37:30,303 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-10-17 10:37:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-10-17 10:37:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-10-17 10:37:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-10-17 10:37:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-10-17 10:37:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-10-17 10:37:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:37:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-17 10:37:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-17 10:37:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:37:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:37:31,035 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:37:31,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:37:31,547 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:37:38,599 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:37:38,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:37:38,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:37:38,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:37:38 BoogieIcfgContainer [2022-10-17 10:37:38,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:37:38,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:37:38,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:37:38,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:37:38,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:37:26" (1/3) ... [2022-10-17 10:37:38,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fad4e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:37:38, skipping insertion in model container [2022-10-17 10:37:38,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:29" (2/3) ... [2022-10-17 10:37:38,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fad4e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:37:38, skipping insertion in model container [2022-10-17 10:37:38,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:37:38" (3/3) ... [2022-10-17 10:37:38,644 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-10-17 10:37:38,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:37:38,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:37:38,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:37:38,783 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;@386b72bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:37:38,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:37:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 1128 states, 791 states have (on average 1.3653603034134008) internal successors, (1080), 813 states have internal predecessors, (1080), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) [2022-10-17 10:37:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-17 10:37:38,808 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:38,809 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:38,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:38,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1344748541, now seen corresponding path program 1 times [2022-10-17 10:37:38,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:38,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946982044] [2022-10-17 10:37:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:38,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:37:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:37:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:37:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:37:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:37:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:37:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:37:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-17 10:37:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:37:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-17 10:37:39,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946982044] [2022-10-17 10:37:39,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946982044] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:39,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:39,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:37:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263972849] [2022-10-17 10:37:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:39,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:37:39,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:37:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:37:40,004 INFO L87 Difference]: Start difference. First operand has 1128 states, 791 states have (on average 1.3653603034134008) internal successors, (1080), 813 states have internal predecessors, (1080), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-17 10:37:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:47,494 INFO L93 Difference]: Finished difference Result 3354 states and 5074 transitions. [2022-10-17 10:37:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:37:47,497 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 72 [2022-10-17 10:37:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:47,538 INFO L225 Difference]: With dead ends: 3354 [2022-10-17 10:37:47,538 INFO L226 Difference]: Without dead ends: 2206 [2022-10-17 10:37:47,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 10:37:47,573 INFO L413 NwaCegarLoop]: 1804 mSDtfsCounter, 1635 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:47,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 3749 Invalid, 1717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [598 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-10-17 10:37:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-10-17 10:37:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2118. [2022-10-17 10:37:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1498 states have (on average 1.3377837116154874) internal successors, (2004), 1519 states have internal predecessors, (2004), 500 states have call successors, (500), 120 states have call predecessors, (500), 119 states have return successors, (493), 490 states have call predecessors, (493), 493 states have call successors, (493) [2022-10-17 10:37:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2997 transitions. [2022-10-17 10:37:47,849 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2997 transitions. Word has length 72 [2022-10-17 10:37:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:47,850 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2997 transitions. [2022-10-17 10:37:47,850 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-17 10:37:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2997 transitions. [2022-10-17 10:37:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-17 10:37:47,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:47,864 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:37:47,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash -708368327, now seen corresponding path program 1 times [2022-10-17 10:37:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:47,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865688601] [2022-10-17 10:37:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:37:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:37:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:37:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:37:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:37:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:37:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:37:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-17 10:37:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:37:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-17 10:37:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865688601] [2022-10-17 10:37:48,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865688601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:48,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:37:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467913566] [2022-10-17 10:37:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:48,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:37:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:37:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:37:48,390 INFO L87 Difference]: Start difference. First operand 2118 states and 2997 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-17 10:37:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:54,298 INFO L93 Difference]: Finished difference Result 5318 states and 7592 transitions. [2022-10-17 10:37:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:37:54,305 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 73 [2022-10-17 10:37:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:54,333 INFO L225 Difference]: With dead ends: 5318 [2022-10-17 10:37:54,333 INFO L226 Difference]: Without dead ends: 3223 [2022-10-17 10:37:54,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 10:37:54,344 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 961 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:54,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 3712 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-10-17 10:37:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2022-10-17 10:37:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3093. [2022-10-17 10:37:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2200 states have (on average 1.3436363636363637) internal successors, (2956), 2221 states have internal predecessors, (2956), 707 states have call successors, (707), 186 states have call predecessors, (707), 185 states have return successors, (700), 697 states have call predecessors, (700), 700 states have call successors, (700) [2022-10-17 10:37:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 4363 transitions. [2022-10-17 10:37:54,571 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 4363 transitions. Word has length 73 [2022-10-17 10:37:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:54,572 INFO L495 AbstractCegarLoop]: Abstraction has 3093 states and 4363 transitions. [2022-10-17 10:37:54,572 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-17 10:37:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 4363 transitions. [2022-10-17 10:37:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-17 10:37:54,574 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:54,574 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:54,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:37:54,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1292444905, now seen corresponding path program 1 times [2022-10-17 10:37:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:54,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324113089] [2022-10-17 10:37:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:54,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:37:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:37:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:37:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:37:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:37:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:37:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:37:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-17 10:37:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:37:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-17 10:37:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:55,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324113089] [2022-10-17 10:37:55,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324113089] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:55,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:55,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:37:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146022888] [2022-10-17 10:37:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:55,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:37:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:37:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:37:55,120 INFO L87 Difference]: Start difference. First operand 3093 states and 4363 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9)