./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- 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-4e7fbc6 [2022-11-23 15:22:14,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:22:14,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:22:14,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:22:14,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:22:14,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:22:14,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:22:14,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:22:14,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:22:14,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:22:14,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:22:14,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:22:14,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:22:15,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:22:15,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:22:15,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:22:15,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:22:15,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:22:15,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:22:15,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:22:15,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:22:15,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:22:15,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:22:15,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:22:15,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:22:15,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:22:15,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:22:15,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:22:15,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:22:15,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:22:15,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:22:15,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:22:15,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:22:15,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:22:15,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:22:15,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:22:15,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:22:15,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:22:15,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:22:15,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:22:15,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:22:15,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:22:15,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:22:15,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:22:15,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:22:15,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:22:15,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:22:15,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:22:15,088 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:22:15,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:22:15,089 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:22:15,089 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:22:15,090 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:22:15,090 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:22:15,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:22:15,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:22:15,091 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:22:15,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:22:15,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:22:15,092 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:22:15,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:22:15,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:22:15,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:22:15,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:22:15,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:22:15,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:22:15,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:22:15,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:22:15,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:22:15,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:22:15,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:22:15,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:22:15,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:22:15,097 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:22:15,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:22:15,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:22:15,098 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:22:15,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:22:15,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:22:15,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:22:15,099 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_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2022-11-23 15:22:15,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:22:15,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:22:15,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:22:15,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:22:15,423 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:22:15,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-23 15:22:18,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:22:19,191 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:22:19,192 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-23 15:22:19,237 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/data/b80a53fe6/e8ed19a8ad604688911843725c8f0790/FLAG929937c14 [2022-11-23 15:22:19,257 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/data/b80a53fe6/e8ed19a8ad604688911843725c8f0790 [2022-11-23 15:22:19,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:22:19,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:22:19,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:22:19,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:22:19,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:22:19,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:19,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0b90b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19, skipping insertion in model container [2022-11-23 15:22:19,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:19,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:22:19,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:22:21,740 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_850fa812-579e-4e9d-a7b3-04d4cee1f326/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-11-23 15:22:21,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:22:21,893 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:22:22,370 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_850fa812-579e-4e9d-a7b3-04d4cee1f326/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-11-23 15:22:22,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:22:22,538 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:22:22,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22 WrapperNode [2022-11-23 15:22:22,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:22:22,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:22:22,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:22:22,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:22:22,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:22,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:22,830 INFO L138 Inliner]: procedures = 373, calls = 2979, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5902 [2022-11-23 15:22:22,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:22:22,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:22:22,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:22:22,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:22:22,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:22,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:22,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:22,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:23,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:23,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:23,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:23,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:23,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:22:23,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:22:23,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:22:23,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:22:23,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (1/1) ... [2022-11-23 15:22:23,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:22:23,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:22:23,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:22:23,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:22:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-23 15:22:23,317 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-23 15:22:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-23 15:22:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-23 15:22:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-23 15:22:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-23 15:22:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-23 15:22:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-23 15:22:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-23 15:22:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-23 15:22:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-23 15:22:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-23 15:22:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 15:22:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 15:22:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-23 15:22:23,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-23 15:22:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-23 15:22:23,320 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-23 15:22:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-23 15:22:23,321 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-23 15:22:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-23 15:22:23,321 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-23 15:22:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-23 15:22:23,321 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-23 15:22:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-23 15:22:23,322 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-23 15:22:23,323 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-23 15:22:23,323 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-23 15:22:23,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:22:23,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:22:23,324 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-23 15:22:23,324 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-23 15:22:23,324 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-23 15:22:23,325 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-23 15:22:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-23 15:22:23,325 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-23 15:22:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-23 15:22:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-23 15:22:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:22:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:22:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-23 15:22:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-23 15:22:23,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:22:23,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:22:23,327 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-23 15:22:23,327 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-23 15:22:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-23 15:22:23,328 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-23 15:22:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-23 15:22:23,329 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-23 15:22:23,329 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-23 15:22:23,329 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-23 15:22:23,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 15:22:23,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 15:22:23,330 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:22:23,330 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:22:23,330 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2022-11-23 15:22:23,330 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2022-11-23 15:22:23,330 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-23 15:22:23,331 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-23 15:22:23,331 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-23 15:22:23,331 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-23 15:22:23,332 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-23 15:22:23,332 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-23 15:22:23,332 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-23 15:22:23,332 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-23 15:22:23,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-23 15:22:23,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-23 15:22:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:22:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:22:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-23 15:22:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-23 15:22:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-23 15:22:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-23 15:22:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:22:23,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:22:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:22:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:22:23,335 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:22:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-23 15:22:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-23 15:22:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-23 15:22:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-23 15:22:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-23 15:22:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-23 15:22:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-23 15:22:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-23 15:22:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-23 15:22:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-23 15:22:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-23 15:22:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-23 15:22:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:22:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 15:22:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 15:22:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 15:22:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-23 15:22:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-23 15:22:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-23 15:22:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-23 15:22:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:22:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:22:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-23 15:22:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-23 15:22:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:22:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:22:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-23 15:22:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-23 15:22:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 15:22:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 15:22:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:22:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:22:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-23 15:22:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-23 15:22:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-23 15:22:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-23 15:22:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:22:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:22:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-23 15:22:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-23 15:22:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-23 15:22:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-23 15:22:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:22:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:22:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 15:22:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 15:22:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-23 15:22:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-23 15:22:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-23 15:22:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-23 15:22:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:22:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:22:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-23 15:22:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-23 15:22:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 15:22:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 15:22:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-23 15:22:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-23 15:22:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-23 15:22:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-23 15:22:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 15:22:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 15:22:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-23 15:22:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-23 15:22:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-23 15:22:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-23 15:22:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-23 15:22:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-23 15:22:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-23 15:22:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-23 15:22:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-23 15:22:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-23 15:22:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-23 15:22:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-23 15:22:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:22:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-23 15:22:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-23 15:22:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-23 15:22:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-23 15:22:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-23 15:22:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-23 15:22:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-23 15:22:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-23 15:22:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-23 15:22:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-23 15:22:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:22:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:22:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-23 15:22:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-23 15:22:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-23 15:22:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-23 15:22:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-23 15:22:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-23 15:22:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:22:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:22:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-23 15:22:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-23 15:22:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:22:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-23 15:22:23,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-23 15:22:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-23 15:22:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-23 15:22:23,369 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-23 15:22:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:22:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:22:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-23 15:22:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-23 15:22:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-23 15:22:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-23 15:22:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-23 15:22:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-23 15:22:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:22:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-23 15:22:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-23 15:22:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:22:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:22:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:22:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:22:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:22:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:22:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:22:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-23 15:22:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-23 15:22:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-11-23 15:22:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-11-23 15:22:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 15:22:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 15:22:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-23 15:22:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-23 15:22:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-11-23 15:22:23,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-11-23 15:22:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-23 15:22:23,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-23 15:22:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-23 15:22:23,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-23 15:22:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-23 15:22:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-23 15:22:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:22:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:22:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-23 15:22:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-23 15:22:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 15:22:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 15:22:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-23 15:22:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-23 15:22:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 15:22:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 15:22:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-23 15:22:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-23 15:22:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:22:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:22:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:22:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:22:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:22:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:22:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:22:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-23 15:22:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-23 15:22:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-23 15:22:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-23 15:22:24,304 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:22:24,307 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:22:34,309 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:22:35,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:22:35,565 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:22:35,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:35 BoogieIcfgContainer [2022-11-23 15:22:35,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:22:35,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:22:35,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:22:35,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:22:35,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:22:19" (1/3) ... [2022-11-23 15:22:35,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16edf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:35, skipping insertion in model container [2022-11-23 15:22:35,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:22" (2/3) ... [2022-11-23 15:22:35,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16edf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:35, skipping insertion in model container [2022-11-23 15:22:35,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:35" (3/3) ... [2022-11-23 15:22:35,583 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-23 15:22:35,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:22:35,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:22:35,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:22:35,719 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=FINITE_AUTOMATA, 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;@5022ef0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:22:35,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:22:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 1417 states, 851 states have (on average 1.3243243243243243) internal successors, (1127), 885 states have internal predecessors, (1127), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2022-11-23 15:22:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:22:35,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:35,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:35,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:35,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1151269839, now seen corresponding path program 1 times [2022-11-23 15:22:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:35,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650527705] [2022-11-23 15:22:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:22:36,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:36,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650527705] [2022-11-23 15:22:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650527705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:36,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:36,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632948849] [2022-11-23 15:22:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:36,516 INFO L87 Difference]: Start difference. First operand has 1417 states, 851 states have (on average 1.3243243243243243) internal successors, (1127), 885 states have internal predecessors, (1127), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:39,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:42,191 INFO L93 Difference]: Finished difference Result 4015 states and 6027 transitions. [2022-11-23 15:22:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:42,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2022-11-23 15:22:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:42,264 INFO L225 Difference]: With dead ends: 4015 [2022-11-23 15:22:42,265 INFO L226 Difference]: Without dead ends: 2622 [2022-11-23 15:22:42,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:42,300 INFO L413 NwaCegarLoop]: 2355 mSDtfsCounter, 1876 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:42,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 4031 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 15:22:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2022-11-23 15:22:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2617. [2022-11-23 15:22:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 1575 states have (on average 1.3212698412698414) internal successors, (2081), 1636 states have internal predecessors, (2081), 829 states have call successors, (829), 220 states have call predecessors, (829), 212 states have return successors, (892), 777 states have call predecessors, (892), 813 states have call successors, (892) [2022-11-23 15:22:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3802 transitions. [2022-11-23 15:22:42,683 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3802 transitions. Word has length 23 [2022-11-23 15:22:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:42,685 INFO L495 AbstractCegarLoop]: Abstraction has 2617 states and 3802 transitions. [2022-11-23 15:22:42,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3802 transitions. [2022-11-23 15:22:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:22:42,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:42,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:42,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:22:42,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1331508350, now seen corresponding path program 1 times [2022-11-23 15:22:42,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:42,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335897808] [2022-11-23 15:22:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:22:43,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:43,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335897808] [2022-11-23 15:22:43,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335897808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:43,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:43,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117342553] [2022-11-23 15:22:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:43,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:43,094 INFO L87 Difference]: Start difference. First operand 2617 states and 3802 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:45,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:47,986 INFO L93 Difference]: Finished difference Result 5122 states and 7432 transitions. [2022-11-23 15:22:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:47,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2022-11-23 15:22:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:48,021 INFO L225 Difference]: With dead ends: 5122 [2022-11-23 15:22:48,021 INFO L226 Difference]: Without dead ends: 5119 [2022-11-23 15:22:48,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:48,025 INFO L413 NwaCegarLoop]: 2235 mSDtfsCounter, 1865 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:48,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 3982 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 528 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 15:22:48,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2022-11-23 15:22:48,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5096. [2022-11-23 15:22:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 3062 states have (on average 1.3210320052253428) internal successors, (4045), 3175 states have internal predecessors, (4045), 1611 states have call successors, (1611), 436 states have call predecessors, (1611), 422 states have return successors, (1751), 1516 states have call predecessors, (1751), 1593 states have call successors, (1751) [2022-11-23 15:22:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 7407 transitions. [2022-11-23 15:22:48,311 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 7407 transitions. Word has length 24 [2022-11-23 15:22:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:48,311 INFO L495 AbstractCegarLoop]: Abstraction has 5096 states and 7407 transitions. [2022-11-23 15:22:48,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 7407 transitions. [2022-11-23 15:22:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 15:22:48,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:48,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:22:48,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1671037268, now seen corresponding path program 1 times [2022-11-23 15:22:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:48,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779247975] [2022-11-23 15:22:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:48,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:22:48,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:48,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779247975] [2022-11-23 15:22:48,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779247975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:48,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:48,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191702087] [2022-11-23 15:22:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:48,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:48,652 INFO L87 Difference]: Start difference. First operand 5096 states and 7407 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:52,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:54,790 INFO L93 Difference]: Finished difference Result 5123 states and 7433 transitions. [2022-11-23 15:22:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-11-23 15:22:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:54,825 INFO L225 Difference]: With dead ends: 5123 [2022-11-23 15:22:54,825 INFO L226 Difference]: Without dead ends: 5120 [2022-11-23 15:22:54,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:54,833 INFO L413 NwaCegarLoop]: 2247 mSDtfsCounter, 1862 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:54,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3997 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 15:22:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2022-11-23 15:22:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5097. [2022-11-23 15:22:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 3063 states have (on average 1.3209271955599087) internal successors, (4046), 3176 states have internal predecessors, (4046), 1611 states have call successors, (1611), 436 states have call predecessors, (1611), 422 states have return successors, (1751), 1516 states have call predecessors, (1751), 1593 states have call successors, (1751) [2022-11-23 15:22:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 7408 transitions. [2022-11-23 15:22:55,143 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 7408 transitions. Word has length 25 [2022-11-23 15:22:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:55,144 INFO L495 AbstractCegarLoop]: Abstraction has 5097 states and 7408 transitions. [2022-11-23 15:22:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 7408 transitions. [2022-11-23 15:22:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 15:22:55,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:55,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:22:55,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:22:55,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:55,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 260675781, now seen corresponding path program 1 times [2022-11-23 15:22:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:55,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022087057] [2022-11-23 15:22:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:22:55,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:55,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022087057] [2022-11-23 15:22:55,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022087057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:55,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:55,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:55,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642832689] [2022-11-23 15:22:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:55,434 INFO L87 Difference]: Start difference. First operand 5097 states and 7408 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:22:58,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:00,763 INFO L93 Difference]: Finished difference Result 7005 states and 10197 transitions. [2022-11-23 15:23:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:00,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-11-23 15:23:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:00,815 INFO L225 Difference]: With dead ends: 7005 [2022-11-23 15:23:00,815 INFO L226 Difference]: Without dead ends: 6981 [2022-11-23 15:23:00,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:23:00,823 INFO L413 NwaCegarLoop]: 2268 mSDtfsCounter, 1870 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:00,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 3635 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 15:23:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2022-11-23 15:23:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6963. [2022-11-23 15:23:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6963 states, 4177 states have (on average 1.3184103423509697) internal successors, (5507), 4350 states have internal predecessors, (5507), 2183 states have call successors, (2183), 632 states have call predecessors, (2183), 602 states have return successors, (2456), 2025 states have call predecessors, (2456), 2164 states have call successors, (2456) [2022-11-23 15:23:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 10146 transitions. [2022-11-23 15:23:01,270 INFO L78 Accepts]: Start accepts. Automaton has 6963 states and 10146 transitions. Word has length 26 [2022-11-23 15:23:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:01,271 INFO L495 AbstractCegarLoop]: Abstraction has 6963 states and 10146 transitions. [2022-11-23 15:23:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 15:23:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6963 states and 10146 transitions. [2022-11-23 15:23:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:23:01,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:01,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:01,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:23:01,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1504090209, now seen corresponding path program 1 times [2022-11-23 15:23:01,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:01,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098356438] [2022-11-23 15:23:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:01,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:01,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098356438] [2022-11-23 15:23:01,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098356438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:01,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:23:01,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:23:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465583429] [2022-11-23 15:23:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:23:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:23:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:23:01,848 INFO L87 Difference]: Start difference. First operand 6963 states and 10146 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:02,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:05,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:07,549 INFO L93 Difference]: Finished difference Result 13915 states and 20277 transitions. [2022-11-23 15:23:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:07,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2022-11-23 15:23:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:07,603 INFO L225 Difference]: With dead ends: 13915 [2022-11-23 15:23:07,604 INFO L226 Difference]: Without dead ends: 6964 [2022-11-23 15:23:07,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:23:07,649 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 0 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:07,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3528 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 15:23:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-11-23 15:23:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2022-11-23 15:23:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 4178 states have (on average 1.318334131163236) internal successors, (5508), 4351 states have internal predecessors, (5508), 2183 states have call successors, (2183), 632 states have call predecessors, (2183), 602 states have return successors, (2456), 2025 states have call predecessors, (2456), 2164 states have call successors, (2456) [2022-11-23 15:23:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 10147 transitions. [2022-11-23 15:23:08,143 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 10147 transitions. Word has length 34 [2022-11-23 15:23:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:08,144 INFO L495 AbstractCegarLoop]: Abstraction has 6964 states and 10147 transitions. [2022-11-23 15:23:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 10147 transitions. [2022-11-23 15:23:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 15:23:08,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:08,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:23:08,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2125090044, now seen corresponding path program 1 times [2022-11-23 15:23:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:08,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234512743] [2022-11-23 15:23:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:08,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:08,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234512743] [2022-11-23 15:23:08,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234512743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:23:08,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060290383] [2022-11-23 15:23:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:08,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:08,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:08,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:23:08,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:23:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:09,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 3606 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:23:09,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:23:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:23:10,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:23:10,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060290383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:10,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:23:10,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:23:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178022145] [2022-11-23 15:23:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:23:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:23:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:10,109 INFO L87 Difference]: Start difference. First operand 6964 states and 10147 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:12,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:15,097 INFO L93 Difference]: Finished difference Result 11164 states and 16253 transitions. [2022-11-23 15:23:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:15,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-23 15:23:15,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:15,147 INFO L225 Difference]: With dead ends: 11164 [2022-11-23 15:23:15,148 INFO L226 Difference]: Without dead ends: 8580 [2022-11-23 15:23:15,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:15,168 INFO L413 NwaCegarLoop]: 2368 mSDtfsCounter, 1989 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:15,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 3922 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-23 15:23:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8580 states. [2022-11-23 15:23:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8580 to 8537. [2022-11-23 15:23:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8537 states, 5130 states have (on average 1.3171539961013645) internal successors, (6757), 5334 states have internal predecessors, (6757), 2654 states have call successors, (2654), 788 states have call predecessors, (2654), 752 states have return successors, (3038), 2466 states have call predecessors, (3038), 2636 states have call successors, (3038) [2022-11-23 15:23:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 12449 transitions. [2022-11-23 15:23:15,607 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 12449 transitions. Word has length 35 [2022-11-23 15:23:15,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:15,607 INFO L495 AbstractCegarLoop]: Abstraction has 8537 states and 12449 transitions. [2022-11-23 15:23:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 12449 transitions. [2022-11-23 15:23:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 15:23:15,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:15,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:15,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:23:15,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:15,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1455163633, now seen corresponding path program 1 times [2022-11-23 15:23:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:15,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514645537] [2022-11-23 15:23:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:16,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:16,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514645537] [2022-11-23 15:23:16,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514645537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:23:16,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564383743] [2022-11-23 15:23:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:16,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:16,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:16,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:23:16,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:23:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:17,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 3608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:23:17,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:23:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:23:17,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:23:17,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564383743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:17,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:23:17,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:23:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872578909] [2022-11-23 15:23:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:17,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:23:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:23:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:17,797 INFO L87 Difference]: Start difference. First operand 8537 states and 12449 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:20,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:21,873 INFO L93 Difference]: Finished difference Result 8539 states and 12450 transitions. [2022-11-23 15:23:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2022-11-23 15:23:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:21,930 INFO L225 Difference]: With dead ends: 8539 [2022-11-23 15:23:21,931 INFO L226 Difference]: Without dead ends: 8536 [2022-11-23 15:23:21,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:21,939 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 1983 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:21,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1763 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 15:23:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2022-11-23 15:23:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 8536. [2022-11-23 15:23:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8536 states, 5130 states have (on average 1.3167641325536061) internal successors, (6755), 5333 states have internal predecessors, (6755), 2653 states have call successors, (2653), 788 states have call predecessors, (2653), 752 states have return successors, (3038), 2466 states have call predecessors, (3038), 2636 states have call successors, (3038) [2022-11-23 15:23:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8536 states to 8536 states and 12446 transitions. [2022-11-23 15:23:22,594 INFO L78 Accepts]: Start accepts. Automaton has 8536 states and 12446 transitions. Word has length 36 [2022-11-23 15:23:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:22,595 INFO L495 AbstractCegarLoop]: Abstraction has 8536 states and 12446 transitions. [2022-11-23 15:23:22,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8536 states and 12446 transitions. [2022-11-23 15:23:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:23:22,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:22,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:22,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:23:22,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:22,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2132690791, now seen corresponding path program 1 times [2022-11-23 15:23:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:22,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618422047] [2022-11-23 15:23:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:23,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618422047] [2022-11-23 15:23:23,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618422047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:23:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701956377] [2022-11-23 15:23:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:23,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:23,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:23:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:23:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:24,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 3610 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:23:24,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:23:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:23:24,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:23:24,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701956377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:24,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:23:24,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:23:24,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65197104] [2022-11-23 15:23:24,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:24,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:23:24,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:23:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:24,715 INFO L87 Difference]: Start difference. First operand 8536 states and 12446 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:27,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:28,269 INFO L93 Difference]: Finished difference Result 8538 states and 12447 transitions. [2022-11-23 15:23:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:28,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2022-11-23 15:23:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:28,320 INFO L225 Difference]: With dead ends: 8538 [2022-11-23 15:23:28,321 INFO L226 Difference]: Without dead ends: 8506 [2022-11-23 15:23:28,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:28,328 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 1980 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:28,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 1761 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 15:23:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2022-11-23 15:23:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 8493. [2022-11-23 15:23:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8493 states, 5112 states have (on average 1.3169014084507042) internal successors, (6732), 5314 states have internal predecessors, (6732), 2635 states have call successors, (2635), 779 states have call predecessors, (2635), 745 states have return successors, (3023), 2451 states have call predecessors, (3023), 2621 states have call successors, (3023) [2022-11-23 15:23:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8493 states to 8493 states and 12390 transitions. [2022-11-23 15:23:28,840 INFO L78 Accepts]: Start accepts. Automaton has 8493 states and 12390 transitions. Word has length 37 [2022-11-23 15:23:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:28,841 INFO L495 AbstractCegarLoop]: Abstraction has 8493 states and 12390 transitions. [2022-11-23 15:23:28,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8493 states and 12390 transitions. [2022-11-23 15:23:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 15:23:28,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:28,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:28,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:23:29,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:29,058 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1687033106, now seen corresponding path program 1 times [2022-11-23 15:23:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:29,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478174687] [2022-11-23 15:23:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:29,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:29,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478174687] [2022-11-23 15:23:29,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478174687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:23:29,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600013567] [2022-11-23 15:23:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:29,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:29,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:23:29,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:23:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:30,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 3612 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:23:30,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:23:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:23:31,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:23:31,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600013567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:31,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:23:31,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:23:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315975906] [2022-11-23 15:23:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:23:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:23:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:31,047 INFO L87 Difference]: Start difference. First operand 8493 states and 12390 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:33,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:35,070 INFO L93 Difference]: Finished difference Result 8531 states and 12415 transitions. [2022-11-23 15:23:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:35,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-11-23 15:23:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:35,123 INFO L225 Difference]: With dead ends: 8531 [2022-11-23 15:23:35,123 INFO L226 Difference]: Without dead ends: 8497 [2022-11-23 15:23:35,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:35,131 INFO L413 NwaCegarLoop]: 1781 mSDtfsCounter, 1836 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:35,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 1936 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 15:23:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8497 states. [2022-11-23 15:23:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8497 to 8438. [2022-11-23 15:23:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 5093 states have (on average 1.317298252503436) internal successors, (6709), 5280 states have internal predecessors, (6709), 2590 states have call successors, (2590), 774 states have call predecessors, (2590), 754 states have return successors, (2959), 2435 states have call predecessors, (2959), 2579 states have call successors, (2959) [2022-11-23 15:23:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12258 transitions. [2022-11-23 15:23:35,712 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12258 transitions. Word has length 38 [2022-11-23 15:23:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:35,713 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 12258 transitions. [2022-11-23 15:23:35,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:23:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12258 transitions. [2022-11-23 15:23:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 15:23:35,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:35,716 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:23:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:23:35,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 15:23:35,930 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:35,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1743736050, now seen corresponding path program 1 times [2022-11-23 15:23:35,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:35,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913379176] [2022-11-23 15:23:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:23:36,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:36,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913379176] [2022-11-23 15:23:36,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913379176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:36,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:23:36,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:23:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588627952] [2022-11-23 15:23:36,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:36,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:23:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:23:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:23:36,234 INFO L87 Difference]: Start difference. First operand 8438 states and 12258 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:23:40,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:43,036 INFO L93 Difference]: Finished difference Result 11001 states and 15943 transitions. [2022-11-23 15:23:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:23:43,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-11-23 15:23:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:43,072 INFO L225 Difference]: With dead ends: 11001 [2022-11-23 15:23:43,072 INFO L226 Difference]: Without dead ends: 8438 [2022-11-23 15:23:43,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:23:43,089 INFO L413 NwaCegarLoop]: 1752 mSDtfsCounter, 1 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5251 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:43,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5251 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 15:23:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2022-11-23 15:23:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8438. [2022-11-23 15:23:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 5093 states have (on average 1.3171019045749068) internal successors, (6708), 5280 states have internal predecessors, (6708), 2590 states have call successors, (2590), 774 states have call predecessors, (2590), 754 states have return successors, (2959), 2435 states have call predecessors, (2959), 2579 states have call successors, (2959) [2022-11-23 15:23:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12257 transitions. [2022-11-23 15:23:43,569 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12257 transitions. Word has length 46 [2022-11-23 15:23:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:43,569 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 12257 transitions. [2022-11-23 15:23:43,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:23:43,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12257 transitions. [2022-11-23 15:23:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 15:23:43,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:43,572 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:23:43,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:23:43,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash 916475284, now seen corresponding path program 1 times [2022-11-23 15:23:43,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:43,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54101716] [2022-11-23 15:23:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:23:43,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:43,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54101716] [2022-11-23 15:23:43,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54101716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:23:43,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882620809] [2022-11-23 15:23:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:43,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:23:43,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:43,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:23:43,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850fa812-579e-4e9d-a7b3-04d4cee1f326/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:23:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:45,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:23:45,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:23:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:45,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:23:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:23:45,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882620809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:23:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874150802] [2022-11-23 15:23:45,377 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-23 15:23:45,377 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:23:45,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:23:45,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:23:45,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:23:51,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:23:51,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 780 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 0 case distinctions, treesize of input 1332 treesize of output 1158 [2022-11-23 15:23:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:23:55,046 INFO L217 Elim1Store]: Index analysis took 1221 ms [2022-11-23 15:25:02,728 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 3063 DAG size of output: 1983 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:25:02,736 INFO L321 Elim1Store]: treesize reduction 3520, result has 45.5 percent of original size [2022-11-23 15:25:02,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 341 select indices, 341 select index equivalence classes, 57972 disjoint index pairs (out of 57970 index pairs), introduced 341 new quantified variables, introduced 340 case distinctions, treesize of input 1712 treesize of output 3974 [2022-11-23 15:25:08,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:25:10,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:12,086 INFO L217 Elim1Store]: Index analysis took 2361 ms [2022-11-23 15:26:45,163 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 3745 DAG size of output: 2043 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:26:45,168 INFO L321 Elim1Store]: treesize reduction 6120, result has 33.3 percent of original size [2022-11-23 15:26:45,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 343 select indices, 343 select index equivalence classes, 58313 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 680 case distinctions, treesize of input 1722 treesize of output 4105 [2022-11-23 15:29:59,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 15:29:59,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 15:30:11,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:11,753 INFO L217 Elim1Store]: Index analysis took 193 ms [2022-11-23 15:30:11,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 343 select indices, 343 select index equivalence classes, 58653 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 1030 [2022-11-23 15:30:14,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:15,131 INFO L217 Elim1Store]: Index analysis took 200 ms [2022-11-23 15:30:15,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 342 select indices, 342 select index equivalence classes, 58312 disjoint index pairs (out of 58311 index pairs), introduced 342 new quantified variables, introduced 0 case distinctions, treesize of input 1711 treesize of output 1027 [2022-11-23 15:30:50,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:50,164 INFO L217 Elim1Store]: Index analysis took 112 ms [2022-11-23 15:30:50,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 342 select indices, 342 select index equivalence classes, 58312 disjoint index pairs (out of 58311 index pairs), introduced 342 new quantified variables, introduced 0 case distinctions, treesize of input 1711 treesize of output 1027 [2022-11-23 15:30:52,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:52,578 INFO L217 Elim1Store]: Index analysis took 117 ms [2022-11-23 15:30:52,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 343 select indices, 343 select index equivalence classes, 58653 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 1030 [2022-11-23 15:31:01,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:31:02,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:31:02,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 15:31:02,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-23 15:31:02,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 15:31:02,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 15:32:00,341 INFO L197 IcfgInterpreter]: Interpreting procedure ldv__builtin_expect with input of size 183 for LOIs [2022-11-23 15:32:00,465 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_handler_precall with input of size 4191 for LOIs [2022-11-23 15:32:16,877 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 4198 for LOIs [2022-11-23 15:32:33,598 INFO L197 IcfgInterpreter]: Interpreting procedure put_tty_driver with input of size 98 for LOIs [2022-11-23 15:32:33,605 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 4197 for LOIs [2022-11-23 15:32:50,006 INFO L180 IcfgInterpreter]: Interpretation finished