./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:42:06,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:42:06,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:42:06,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:42:06,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:42:06,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:42:06,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:42:06,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:42:06,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:42:06,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:42:06,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:42:06,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:42:06,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:42:06,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:42:06,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:42:06,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:42:06,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:42:06,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:42:06,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:42:06,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:42:06,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:42:06,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:42:06,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:42:06,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:42:06,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:42:06,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:42:06,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:42:06,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:42:06,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:42:06,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:42:06,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:42:06,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:42:06,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:42:06,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:42:06,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:42:06,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:42:06,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:42:06,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:42:06,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:42:06,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:42:06,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:42:06,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:42:06,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:42:06,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:42:06,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:42:06,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:42:06,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:42:06,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:42:06,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:42:06,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:42:06,983 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:42:06,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:42:06,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:42:06,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:42:06,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:42:06,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:42:06,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:42:06,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:42:06,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:42:06,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:42:06,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:42:06,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:42:06,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:42:06,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:06,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:42:06,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:42:06,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:42:06,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:42:06,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:42:06,988 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:42:06,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:42:06,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:42:06,989 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_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2022-11-20 12:42:07,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:42:07,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:42:07,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:42:07,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:42:07,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:42:07,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-11-20 12:42:10,441 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:10,993 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:10,994 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-11-20 12:42:11,027 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/data/d7c104667/66c720702ddb4bee9a6669cf79957807/FLAG860170c91 [2022-11-20 12:42:11,046 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/data/d7c104667/66c720702ddb4bee9a6669cf79957807 [2022-11-20 12:42:11,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:11,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:11,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:11,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:11,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:11,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c4efa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11, skipping insertion in model container [2022-11-20 12:42:11,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:11,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:12,666 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-11-20 12:42:12,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:12,775 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:42:13,193 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2022-11-20 12:42:13,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:13,280 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:42:13,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13 WrapperNode [2022-11-20 12:42:13,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:13,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:13,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:42:13,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:42:13,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,587 INFO L138 Inliner]: procedures = 205, calls = 1417, calls flagged for inlining = 89, calls inlined = 83, statements flattened = 3253 [2022-11-20 12:42:13,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:13,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:42:13,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:42:13,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:42:13,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:42:13,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:42:13,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:42:13,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:42:13,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (1/1) ... [2022-11-20 12:42:13,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:13,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:42:13,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:42:13,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-20 12:42:13,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-20 12:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-11-20 12:42:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-11-20 12:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:42:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:42:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 12:42:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 12:42:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-20 12:42:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-20 12:42:13,930 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-11-20 12:42:13,930 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-11-20 12:42:13,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 12:42:13,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 12:42:13,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:42:13,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:42:13,931 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-20 12:42:13,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-20 12:42:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-20 12:42:13,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-20 12:42:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:42:13,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:42:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-11-20 12:42:13,933 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-11-20 12:42:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-11-20 12:42:13,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-11-20 12:42:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:42:13,933 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:42:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:42:13,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:42:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-11-20 12:42:13,935 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-11-20 12:42:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 12:42:13,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 12:42:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-11-20 12:42:13,937 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-11-20 12:42:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:42:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 12:42:13,937 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 12:42:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-20 12:42:13,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-20 12:42:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-11-20 12:42:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-11-20 12:42:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:42:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-20 12:42:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-20 12:42:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-20 12:42:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-20 12:42:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 12:42:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 12:42:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-11-20 12:42:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-11-20 12:42:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-20 12:42:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-20 12:42:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-11-20 12:42:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-11-20 12:42:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:42:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:42:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-11-20 12:42:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-11-20 12:42:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-11-20 12:42:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-11-20 12:42:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 12:42:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 12:42:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-20 12:42:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-20 12:42:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 12:42:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 12:42:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-11-20 12:42:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-11-20 12:42:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-20 12:42:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-20 12:42:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-20 12:42:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-20 12:42:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 12:42:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-11-20 12:42:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-11-20 12:42:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 12:42:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 12:42:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-11-20 12:42:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-11-20 12:42:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:42:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-11-20 12:42:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-11-20 12:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-11-20 12:42:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-11-20 12:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:42:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 12:42:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 12:42:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-20 12:42:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-20 12:42:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 12:42:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 12:42:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-11-20 12:42:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-11-20 12:42:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-11-20 12:42:13,952 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-11-20 12:42:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-11-20 12:42:13,952 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-11-20 12:42:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:42:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-11-20 12:42:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-11-20 12:42:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-11-20 12:42:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-11-20 12:42:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:42:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:42:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 12:42:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 12:42:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-11-20 12:42:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-11-20 12:42:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:42:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:42:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:42:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:42:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:42:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-20 12:42:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-20 12:42:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-11-20 12:42:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-11-20 12:42:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-20 12:42:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-20 12:42:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-11-20 12:42:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-11-20 12:42:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-11-20 12:42:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-11-20 12:42:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 12:42:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 12:42:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-11-20 12:42:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-11-20 12:42:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 12:42:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 12:42:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-20 12:42:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-20 12:42:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-11-20 12:42:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-11-20 12:42:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-11-20 12:42:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-11-20 12:42:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-11-20 12:42:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-11-20 12:42:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:42:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-11-20 12:42:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-11-20 12:42:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-20 12:42:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-20 12:42:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:42:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:42:14,686 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:42:14,690 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:15,168 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:42:18,097 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:18,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:18,119 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:42:18,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:18 BoogieIcfgContainer [2022-11-20 12:42:18,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:18,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:18,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:18,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:18,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:42:11" (1/3) ... [2022-11-20 12:42:18,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcc32d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:18, skipping insertion in model container [2022-11-20 12:42:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:13" (2/3) ... [2022-11-20 12:42:18,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcc32d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:18, skipping insertion in model container [2022-11-20 12:42:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:18" (3/3) ... [2022-11-20 12:42:18,136 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-11-20 12:42:18,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:18,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:42:18,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:42:18,273 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;@31341ac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:42:18,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:42:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 1029 states, 718 states have (on average 1.3426183844011141) internal successors, (964), 751 states have internal predecessors, (964), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2022-11-20 12:42:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 12:42:18,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:18,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:18,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1514978925, now seen corresponding path program 1 times [2022-11-20 12:42:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:18,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858371813] [2022-11-20 12:42:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:42:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:42:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:42:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:42:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:42:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:42:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:42:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858371813] [2022-11-20 12:42:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858371813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:19,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:19,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:42:19,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736061836] [2022-11-20 12:42:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:19,698 INFO L87 Difference]: Start difference. First operand has 1029 states, 718 states have (on average 1.3426183844011141) internal successors, (964), 751 states have internal predecessors, (964), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:28,928 INFO L93 Difference]: Finished difference Result 3714 states and 5620 transitions. [2022-11-20 12:42:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:42:28,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2022-11-20 12:42:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:28,969 INFO L225 Difference]: With dead ends: 3714 [2022-11-20 12:42:28,969 INFO L226 Difference]: Without dead ends: 2660 [2022-11-20 12:42:28,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:42:28,990 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 5773 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 3874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5951 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 6897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3874 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:28,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5951 Valid, 2710 Invalid, 6897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3874 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:42:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-11-20 12:42:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2053. [2022-11-20 12:42:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1431 states have (on average 1.3354297693920336) internal successors, (1911), 1492 states have internal predecessors, (1911), 487 states have call successors, (487), 131 states have call predecessors, (487), 134 states have return successors, (525), 468 states have call predecessors, (525), 486 states have call successors, (525) [2022-11-20 12:42:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2923 transitions. [2022-11-20 12:42:29,281 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2923 transitions. Word has length 98 [2022-11-20 12:42:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:29,282 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2923 transitions. [2022-11-20 12:42:29,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2923 transitions. [2022-11-20 12:42:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 12:42:29,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:29,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:29,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:42:29,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash -12902058, now seen corresponding path program 1 times [2022-11-20 12:42:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:29,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358019516] [2022-11-20 12:42:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:42:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:42:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:42:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:42:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:42:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 12:42:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:42:29,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:29,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358019516] [2022-11-20 12:42:30,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358019516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:30,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:30,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:42:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512168899] [2022-11-20 12:42:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:30,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:30,003 INFO L87 Difference]: Start difference. First operand 2053 states and 2923 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:39,201 INFO L93 Difference]: Finished difference Result 6040 states and 9020 transitions. [2022-11-20 12:42:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:42:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2022-11-20 12:42:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:39,227 INFO L225 Difference]: With dead ends: 6040 [2022-11-20 12:42:39,227 INFO L226 Difference]: Without dead ends: 4000 [2022-11-20 12:42:39,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:42:39,238 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 4917 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 3086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5096 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 6812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3086 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:39,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5096 Valid, 2946 Invalid, 6812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3086 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:42:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2022-11-20 12:42:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3102. [2022-11-20 12:42:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 2161 states have (on average 1.3341045812124017) internal successors, (2883), 2257 states have internal predecessors, (2883), 734 states have call successors, (734), 196 states have call predecessors, (734), 206 states have return successors, (836), 710 states have call predecessors, (836), 733 states have call successors, (836) [2022-11-20 12:42:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 4453 transitions. [2022-11-20 12:42:39,459 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 4453 transitions. Word has length 100 [2022-11-20 12:42:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:39,462 INFO L495 AbstractCegarLoop]: Abstraction has 3102 states and 4453 transitions. [2022-11-20 12:42:39,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 4453 transitions. [2022-11-20 12:42:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 12:42:39,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:39,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:39,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:42:39,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1011169441, now seen corresponding path program 1 times [2022-11-20 12:42:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:39,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048219126] [2022-11-20 12:42:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:39,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:42:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:39,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:42:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:42:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 12:42:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:42:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:42:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:42:40,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:40,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048219126] [2022-11-20 12:42:40,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048219126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:40,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:40,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:42:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516551238] [2022-11-20 12:42:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:40,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:40,068 INFO L87 Difference]: Start difference. First operand 3102 states and 4453 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:48,971 INFO L93 Difference]: Finished difference Result 8424 states and 12701 transitions. [2022-11-20 12:42:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:42:48,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-11-20 12:42:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:49,007 INFO L225 Difference]: With dead ends: 8424 [2022-11-20 12:42:49,008 INFO L226 Difference]: Without dead ends: 5335 [2022-11-20 12:42:49,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:42:49,028 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 4931 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 3706 mSolverCounterSat, 3091 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 6797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3091 IncrementalHoareTripleChecker+Valid, 3706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:49,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5109 Valid, 2943 Invalid, 6797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3091 Valid, 3706 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 12:42:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2022-11-20 12:42:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 4148. [2022-11-20 12:42:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 2890 states have (on average 1.332871972318339) internal successors, (3852), 3021 states have internal predecessors, (3852), 979 states have call successors, (979), 261 states have call predecessors, (979), 278 states have return successors, (1161), 950 states have call predecessors, (1161), 978 states have call successors, (1161) [2022-11-20 12:42:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 5992 transitions. [2022-11-20 12:42:49,380 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 5992 transitions. Word has length 101 [2022-11-20 12:42:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:49,381 INFO L495 AbstractCegarLoop]: Abstraction has 4148 states and 5992 transitions. [2022-11-20 12:42:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 5992 transitions. [2022-11-20 12:42:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 12:42:49,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:49,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:49,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:42:49,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2017964888, now seen corresponding path program 1 times [2022-11-20 12:42:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:49,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458804979] [2022-11-20 12:42:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:42:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:42:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:42:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:42:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:42:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:42:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:42:49,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:49,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458804979] [2022-11-20 12:42:49,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458804979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:49,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:49,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:42:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188607802] [2022-11-20 12:42:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:49,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:49,899 INFO L87 Difference]: Start difference. First operand 4148 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:56,987 INFO L93 Difference]: Finished difference Result 10769 states and 16243 transitions. [2022-11-20 12:42:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:42:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2022-11-20 12:42:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:57,029 INFO L225 Difference]: With dead ends: 10769 [2022-11-20 12:42:57,029 INFO L226 Difference]: Without dead ends: 6634 [2022-11-20 12:42:57,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:42:57,047 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 5731 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 3799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5908 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 6892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3799 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:57,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5908 Valid, 2567 Invalid, 6892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3799 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 12:42:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2022-11-20 12:42:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 5172. [2022-11-20 12:42:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 3604 states have (on average 1.3312985571587126) internal successors, (4798), 3768 states have internal predecessors, (4798), 1219 states have call successors, (1219), 326 states have call predecessors, (1219), 348 states have return successors, (1479), 1185 states have call predecessors, (1479), 1218 states have call successors, (1479) [2022-11-20 12:42:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 7496 transitions. [2022-11-20 12:42:57,441 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 7496 transitions. Word has length 99 [2022-11-20 12:42:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:57,442 INFO L495 AbstractCegarLoop]: Abstraction has 5172 states and 7496 transitions. [2022-11-20 12:42:57,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 12:42:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 7496 transitions. [2022-11-20 12:42:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:42:57,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:57,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:57,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:42:57,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:57,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2031673904, now seen corresponding path program 1 times [2022-11-20 12:42:57,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:57,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098552231] [2022-11-20 12:42:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:57,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:42:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:42:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:42:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:42:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 12:42:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:42:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:42:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 12:42:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:42:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:42:57,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:57,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098552231] [2022-11-20 12:42:57,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098552231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:57,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:57,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:42:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419926173] [2022-11-20 12:42:57,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:57,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:57,978 INFO L87 Difference]: Start difference. First operand 5172 states and 7496 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:43:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:07,654 INFO L93 Difference]: Finished difference Result 17788 states and 26749 transitions. [2022-11-20 12:43:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:43:07,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 123 [2022-11-20 12:43:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:07,749 INFO L225 Difference]: With dead ends: 17788 [2022-11-20 12:43:07,749 INFO L226 Difference]: Without dead ends: 12629 [2022-11-20 12:43:07,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:43:07,771 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 3353 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 2291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 7463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2291 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:07,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 3844 Invalid, 7463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2291 Valid, 5172 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-20 12:43:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12629 states. [2022-11-20 12:43:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12629 to 10147. [2022-11-20 12:43:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10147 states, 7067 states have (on average 1.3265883684731852) internal successors, (9375), 7393 states have internal predecessors, (9375), 2378 states have call successors, (2378), 636 states have call predecessors, (2378), 701 states have return successors, (3125), 2314 states have call predecessors, (3125), 2377 states have call successors, (3125) [2022-11-20 12:43:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10147 states to 10147 states and 14878 transitions. [2022-11-20 12:43:08,666 INFO L78 Accepts]: Start accepts. Automaton has 10147 states and 14878 transitions. Word has length 123 [2022-11-20 12:43:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:08,667 INFO L495 AbstractCegarLoop]: Abstraction has 10147 states and 14878 transitions. [2022-11-20 12:43:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:43:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10147 states and 14878 transitions. [2022-11-20 12:43:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 12:43:08,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:08,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:08,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:43:08,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash 473614148, now seen corresponding path program 1 times [2022-11-20 12:43:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824067577] [2022-11-20 12:43:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:08,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:43:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:43:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:43:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:43:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:43:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:43:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 12:43:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:43:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:43:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:43:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:43:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 12:43:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 12:43:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 12:43:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:43:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 12:43:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 12:43:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 12:43:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:09,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824067577] [2022-11-20 12:43:09,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824067577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:09,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:09,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:43:09,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030523591] [2022-11-20 12:43:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:09,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:09,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:09,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:09,193 INFO L87 Difference]: Start difference. First operand 10147 states and 14878 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:43:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:17,046 INFO L93 Difference]: Finished difference Result 31600 states and 47614 transitions. [2022-11-20 12:43:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:43:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 190 [2022-11-20 12:43:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:17,141 INFO L225 Difference]: With dead ends: 31600 [2022-11-20 12:43:17,141 INFO L226 Difference]: Without dead ends: 21466 [2022-11-20 12:43:17,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:43:17,183 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 3312 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 3564 mSolverCounterSat, 2543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 6107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2543 IncrementalHoareTripleChecker+Valid, 3564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:17,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3472 Valid, 3134 Invalid, 6107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2543 Valid, 3564 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 12:43:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21466 states. [2022-11-20 12:43:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21466 to 17318. [2022-11-20 12:43:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17318 states, 11925 states have (on average 1.3223480083857442) internal successors, (15769), 12525 states have internal predecessors, (15769), 4165 states have call successors, (4165), 1108 states have call predecessors, (4165), 1227 states have return successors, (5532), 4048 states have call predecessors, (5532), 4164 states have call successors, (5532) [2022-11-20 12:43:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17318 states to 17318 states and 25466 transitions. [2022-11-20 12:43:18,706 INFO L78 Accepts]: Start accepts. Automaton has 17318 states and 25466 transitions. Word has length 190 [2022-11-20 12:43:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:18,708 INFO L495 AbstractCegarLoop]: Abstraction has 17318 states and 25466 transitions. [2022-11-20 12:43:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:43:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 17318 states and 25466 transitions. [2022-11-20 12:43:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 12:43:18,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:18,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:43:18,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash 532654524, now seen corresponding path program 1 times [2022-11-20 12:43:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:18,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827010292] [2022-11-20 12:43:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:43:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:43:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:43:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:43:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:43:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:43:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:43:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 12:43:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 12:43:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 12:43:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 12:43:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 12:43:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-20 12:43:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 12:43:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 12:43:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-20 12:43:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 12:43:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-20 12:43:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 12:43:19,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:19,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827010292] [2022-11-20 12:43:19,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827010292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:19,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:19,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:43:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077719845] [2022-11-20 12:43:19,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:19,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:19,483 INFO L87 Difference]: Start difference. First operand 17318 states and 25466 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:43:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:30,201 INFO L93 Difference]: Finished difference Result 48418 states and 72883 transitions. [2022-11-20 12:43:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:43:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 218 [2022-11-20 12:43:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:30,341 INFO L225 Difference]: With dead ends: 48418 [2022-11-20 12:43:30,341 INFO L226 Difference]: Without dead ends: 31124 [2022-11-20 12:43:30,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:43:30,394 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 3088 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 5196 mSolverCounterSat, 2037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 7233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2037 IncrementalHoareTripleChecker+Valid, 5196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:30,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3262 Valid, 4331 Invalid, 7233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2037 Valid, 5196 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:43:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31124 states. [2022-11-20 12:43:32,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31124 to 25128. [2022-11-20 12:43:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25128 states, 17296 states have (on average 1.3208256244218317) internal successors, (22845), 18170 states have internal predecessors, (22845), 6040 states have call successors, (6040), 1618 states have call predecessors, (6040), 1791 states have return successors, (8027), 5870 states have call predecessors, (8027), 6039 states have call successors, (8027) [2022-11-20 12:43:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25128 states to 25128 states and 36912 transitions. [2022-11-20 12:43:32,709 INFO L78 Accepts]: Start accepts. Automaton has 25128 states and 36912 transitions. Word has length 218 [2022-11-20 12:43:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:32,710 INFO L495 AbstractCegarLoop]: Abstraction has 25128 states and 36912 transitions. [2022-11-20 12:43:32,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:43:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 25128 states and 36912 transitions. [2022-11-20 12:43:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-20 12:43:32,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:32,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:32,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:43:32,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1729078987, now seen corresponding path program 1 times [2022-11-20 12:43:32,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:32,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706548664] [2022-11-20 12:43:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:43:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:43:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:43:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:43:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:43:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:43:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:43:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:43:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 12:43:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 12:43:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:43:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 12:43:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 12:43:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-20 12:43:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-20 12:43:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-20 12:43:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-20 12:43:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-20 12:43:33,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:33,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706548664] [2022-11-20 12:43:33,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706548664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:33,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:33,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:43:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714626152] [2022-11-20 12:43:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:43:33,593 INFO L87 Difference]: Start difference. First operand 25128 states and 36912 transitions. Second operand has 10 states, 9 states have (on average 13.0) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:43:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:46,242 INFO L93 Difference]: Finished difference Result 68857 states and 108759 transitions. [2022-11-20 12:43:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:43:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.0) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 222 [2022-11-20 12:43:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:46,428 INFO L225 Difference]: With dead ends: 68857 [2022-11-20 12:43:46,428 INFO L226 Difference]: Without dead ends: 43753 [2022-11-20 12:43:46,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:43:46,511 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 3305 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 6977 mSolverCounterSat, 2182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 5098 SdHoareTripleChecker+Invalid, 9159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2182 IncrementalHoareTripleChecker+Valid, 6977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:46,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 5098 Invalid, 9159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2182 Valid, 6977 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-20 12:43:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43753 states. [2022-11-20 12:43:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43753 to 28451. [2022-11-20 12:43:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28451 states, 19551 states have (on average 1.316352104751675) internal successors, (25736), 20524 states have internal predecessors, (25736), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 1995 states have return successors, (10274), 6896 states have call predecessors, (10274), 6903 states have call successors, (10274) [2022-11-20 12:43:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28451 states to 28451 states and 42914 transitions. [2022-11-20 12:43:49,412 INFO L78 Accepts]: Start accepts. Automaton has 28451 states and 42914 transitions. Word has length 222 [2022-11-20 12:43:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:49,413 INFO L495 AbstractCegarLoop]: Abstraction has 28451 states and 42914 transitions. [2022-11-20 12:43:49,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.0) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:43:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28451 states and 42914 transitions. [2022-11-20 12:43:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-20 12:43:49,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:49,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:43:49,427 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:49,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash -518364346, now seen corresponding path program 1 times [2022-11-20 12:43:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:49,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123979618] [2022-11-20 12:43:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:43:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:43:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:43:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:43:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:43:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:43:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:43:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:43:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 12:43:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:43:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 12:43:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 12:43:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 12:43:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 12:43:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 12:43:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 12:43:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-20 12:43:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-20 12:43:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-20 12:43:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-11-20 12:43:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-20 12:43:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 12:43:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 12:43:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:50,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123979618] [2022-11-20 12:43:50,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123979618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:50,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:50,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:43:50,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802752912] [2022-11-20 12:43:50,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:50,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:43:50,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:43:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:43:50,297 INFO L87 Difference]: Start difference. First operand 28451 states and 42914 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 12:44:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:03,359 INFO L93 Difference]: Finished difference Result 74270 states and 113672 transitions. [2022-11-20 12:44:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:44:03,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 250 [2022-11-20 12:44:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:03,558 INFO L225 Difference]: With dead ends: 74270 [2022-11-20 12:44:03,559 INFO L226 Difference]: Without dead ends: 45843 [2022-11-20 12:44:03,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:44:03,673 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 3648 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 5565 mSolverCounterSat, 2711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3780 SdHoareTripleChecker+Valid, 4803 SdHoareTripleChecker+Invalid, 8276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2711 IncrementalHoareTripleChecker+Valid, 5565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:03,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3780 Valid, 4803 Invalid, 8276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2711 Valid, 5565 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-20 12:44:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45843 states. [2022-11-20 12:44:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45843 to 28471. [2022-11-20 12:44:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28471 states, 19571 states have (on average 1.3160288181493025) internal successors, (25756), 20544 states have internal predecessors, (25756), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 1995 states have return successors, (10274), 6896 states have call predecessors, (10274), 6903 states have call successors, (10274) [2022-11-20 12:44:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28471 states to 28471 states and 42934 transitions. [2022-11-20 12:44:06,935 INFO L78 Accepts]: Start accepts. Automaton has 28471 states and 42934 transitions. Word has length 250 [2022-11-20 12:44:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:06,936 INFO L495 AbstractCegarLoop]: Abstraction has 28471 states and 42934 transitions. [2022-11-20 12:44:06,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 12:44:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 28471 states and 42934 transitions. [2022-11-20 12:44:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-20 12:44:06,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:06,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:06,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:44:06,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 704512177, now seen corresponding path program 1 times [2022-11-20 12:44:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:06,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721040626] [2022-11-20 12:44:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:44:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:44:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:44:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:44:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:44:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:44:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:44:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:44:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:44:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 12:44:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:44:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:44:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-20 12:44:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-20 12:44:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-20 12:44:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-11-20 12:44:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-20 12:44:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 12:44:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-20 12:44:07,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:07,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721040626] [2022-11-20 12:44:07,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721040626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:07,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181709254] [2022-11-20 12:44:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:07,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:07,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:07,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:44:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:09,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 3705 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:44:09,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-20 12:44:09,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181709254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:09,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:44:09,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 11 [2022-11-20 12:44:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006007215] [2022-11-20 12:44:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:44:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:44:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:09,161 INFO L87 Difference]: Start difference. First operand 28471 states and 42934 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 12:44:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:12,600 INFO L93 Difference]: Finished difference Result 58243 states and 87979 transitions. [2022-11-20 12:44:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:44:12,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 250 [2022-11-20 12:44:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:12,710 INFO L225 Difference]: With dead ends: 58243 [2022-11-20 12:44:12,710 INFO L226 Difference]: Without dead ends: 29796 [2022-11-20 12:44:12,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:12,804 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 203 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:12,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 6551 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:44:12,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29796 states. [2022-11-20 12:44:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29796 to 28511. [2022-11-20 12:44:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28511 states, 19601 states have (on average 1.3155451252487118) internal successors, (25786), 20574 states have internal predecessors, (25786), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2005 states have return successors, (10294), 6906 states have call predecessors, (10294), 6903 states have call successors, (10294) [2022-11-20 12:44:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28511 states to 28511 states and 42984 transitions. [2022-11-20 12:44:15,480 INFO L78 Accepts]: Start accepts. Automaton has 28511 states and 42984 transitions. Word has length 250 [2022-11-20 12:44:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:15,481 INFO L495 AbstractCegarLoop]: Abstraction has 28511 states and 42984 transitions. [2022-11-20 12:44:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 12:44:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 28511 states and 42984 transitions. [2022-11-20 12:44:15,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 12:44:15,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:15,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:15,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:15,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a39d055-f19b-4fbb-84dd-3cc836b53cd0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:15,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash -40370876, now seen corresponding path program 1 times [2022-11-20 12:44:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:15,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003106588] [2022-11-20 12:44:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:44:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:44:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:44:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:44:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:44:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:44:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:44:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 12:44:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:44:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:44:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 12:44:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:44:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 12:44:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-20 12:44:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-11-20 12:44:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-20 12:44:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 12:44:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-20 12:44:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-20 12:44:16,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:16,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003106588] [2022-11-20 12:44:16,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003106588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:16,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:16,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:44:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438324848] [2022-11-20 12:44:16,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:44:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:44:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:16,695 INFO L87 Difference]: Start difference. First operand 28511 states and 42984 transitions. Second operand has 11 states, 10 states have (on average 15.0) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:44:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:28,828 INFO L93 Difference]: Finished difference Result 66475 states and 103467 transitions. [2022-11-20 12:44:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:44:28,828 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 15.0) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2022-11-20 12:44:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:28,948 INFO L225 Difference]: With dead ends: 66475 [2022-11-20 12:44:28,948 INFO L226 Difference]: Without dead ends: 37988 [2022-11-20 12:44:29,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:44:29,027 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 3367 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 7090 mSolverCounterSat, 2420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 9510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2420 IncrementalHoareTripleChecker+Valid, 7090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:29,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 4872 Invalid, 9510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2420 Valid, 7090 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-20 12:44:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37988 states. [2022-11-20 12:44:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37988 to 28551. [2022-11-20 12:44:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28551 states, 19631 states have (on average 1.3150629107024603) internal successors, (25816), 20604 states have internal predecessors, (25816), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2022-11-20 12:44:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28551 states to 28551 states and 43034 transitions. [2022-11-20 12:44:32,065 INFO L78 Accepts]: Start accepts. Automaton has 28551 states and 43034 transitions. Word has length 257 [2022-11-20 12:44:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:32,066 INFO L495 AbstractCegarLoop]: Abstraction has 28551 states and 43034 transitions. [2022-11-20 12:44:32,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 15.0) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:44:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28551 states and 43034 transitions. [2022-11-20 12:44:32,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 12:44:32,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:32,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:32,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:44:32,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:32,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1889859973, now seen corresponding path program 1 times [2022-11-20 12:44:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:32,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704444572] [2022-11-20 12:44:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:44:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:44:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:44:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:44:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:44:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:44:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:44:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 12:44:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:44:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:44:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 12:44:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:44:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 12:44:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-20 12:44:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-11-20 12:44:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-20 12:44:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 12:44:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-20 12:44:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-20 12:44:32,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:32,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704444572] [2022-11-20 12:44:32,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704444572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:32,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:32,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:44:32,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827942563] [2022-11-20 12:44:32,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:32,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:44:32,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:44:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:44:32,621 INFO L87 Difference]: Start difference. First operand 28551 states and 43034 transitions. Second operand has 9 states, 8 states have (on average 18.75) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:44:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:45,348 INFO L93 Difference]: Finished difference Result 65230 states and 101281 transitions. [2022-11-20 12:44:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:44:45,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 18.75) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2022-11-20 12:44:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:45,499 INFO L225 Difference]: With dead ends: 65230 [2022-11-20 12:44:45,500 INFO L226 Difference]: Without dead ends: 36703 [2022-11-20 12:44:45,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:44:45,604 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 2561 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 5814 mSolverCounterSat, 1905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 7719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1905 IncrementalHoareTripleChecker+Valid, 5814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:45,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2656 Valid, 3083 Invalid, 7719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1905 Valid, 5814 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-20 12:44:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36703 states. [2022-11-20 12:44:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36703 to 28571. [2022-11-20 12:44:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28571 states, 19651 states have (on average 1.3147422523026817) internal successors, (25836), 20624 states have internal predecessors, (25836), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2022-11-20 12:44:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28571 states to 28571 states and 43054 transitions. [2022-11-20 12:44:48,410 INFO L78 Accepts]: Start accepts. Automaton has 28571 states and 43054 transitions. Word has length 257 [2022-11-20 12:44:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:48,410 INFO L495 AbstractCegarLoop]: Abstraction has 28571 states and 43054 transitions. [2022-11-20 12:44:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 18.75) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:44:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 28571 states and 43054 transitions. [2022-11-20 12:44:48,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 12:44:48,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:48,420 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:48,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:44:48,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:48,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash 51589150, now seen corresponding path program 1 times [2022-11-20 12:44:48,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:48,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822602815] [2022-11-20 12:44:48,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:48,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:44:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:44:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:44:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:44:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:44:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:44:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:44:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 12:44:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:44:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:44:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 12:44:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 12:44:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:44:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 12:44:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-20 12:44:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-11-20 12:44:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-11-20 12:44:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-11-20 12:44:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-20 12:44:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-20 12:44:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:49,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822602815] [2022-11-20 12:44:49,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822602815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:49,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:49,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:44:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648554538] [2022-11-20 12:44:49,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:44:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:44:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:44:49,165 INFO L87 Difference]: Start difference. First operand 28571 states and 43054 transitions. Second operand has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22)