./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI --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 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- 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-5e519f3 [2022-11-03 02:06:33,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:33,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:33,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:33,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:33,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:33,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:33,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:33,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:33,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:33,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:33,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:33,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:33,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:33,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:33,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:33,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:33,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:33,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:33,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:33,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:33,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:33,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:33,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:33,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:33,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:33,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:33,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:33,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:33,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:33,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:33,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:33,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:33,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:33,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:33,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:33,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:33,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:33,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:33,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:33,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:33,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:06:33,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:33,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:33,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:33,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:33,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:33,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:33,349 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:33,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:33,349 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:33,349 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:33,350 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:33,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:33,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:33,351 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:33,351 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:33,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:33,352 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:33,352 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:33,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:33,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:33,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:33,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:33,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:33,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:33,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:33,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:33,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:33,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:33,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:33,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:33,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:33,356 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:33,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:33,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:33,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:33,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:33,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:33,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:33,359 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_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2022-11-03 02:06:33,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:33,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:33,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:33,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:33,695 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:33,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2022-11-03 02:06:33,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/data/1e5dda9d4/6d981b082e494822af5c270e4b5206aa/FLAG900969a49 [2022-11-03 02:06:34,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:34,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2022-11-03 02:06:34,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/data/1e5dda9d4/6d981b082e494822af5c270e4b5206aa/FLAG900969a49 [2022-11-03 02:06:35,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/data/1e5dda9d4/6d981b082e494822af5c270e4b5206aa [2022-11-03 02:06:35,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:35,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:35,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:35,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:35,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:35,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:35" (1/1) ... [2022-11-03 02:06:35,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282b68d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:35, skipping insertion in model container [2022-11-03 02:06:35,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:35" (1/1) ... [2022-11-03 02:06:35,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:35,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:06:40,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2022-11-03 02:06:40,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:40,611 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:06:41,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2022-11-03 02:06:41,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:41,604 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:06:41,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41 WrapperNode [2022-11-03 02:06:41,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:41,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:41,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:06:41,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:06:41,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:41,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,135 INFO L138 Inliner]: procedures = 713, calls = 6159, calls flagged for inlining = 240, calls inlined = 191, statements flattened = 9050 [2022-11-03 02:06:42,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:42,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:06:42,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:06:42,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:06:42,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,619 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:06:42,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:06:42,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:06:42,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:06:42,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (1/1) ... [2022-11-03 02:06:42,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:42,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:42,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:06:42,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:06:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:06:42,902 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:06:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msix_exact [2022-11-03 02:06:42,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msix_exact [2022-11-03 02:06:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_signal_notify [2022-11-03 02:06:42,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_signal_notify [2022-11-03 02:06:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2022-11-03 02:06:42,903 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2022-11-03 02:06:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_exists [2022-11-03 02:06:42,903 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_exists [2022-11-03 02:06:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_code_active [2022-11-03 02:06:42,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_code_active [2022-11-03 02:06:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_subscriber_mutex [2022-11-03 02:06:42,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_subscriber_mutex [2022-11-03 02:06:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2022-11-03 02:06:42,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2022-11-03 02:06:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:06:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:06:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_open [2022-11-03 02:06:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_open [2022-11-03 02:06:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unregister_user_memory [2022-11-03 02:06:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unregister_user_memory [2022-11-03 02:06:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_add_notification [2022-11-03 02:06:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_add_notification [2022-11-03 02:06:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_unlocked_ioctl [2022-11-03 02:06:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_unlocked_ioctl [2022-11-03 02:06:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:06:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:06:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:06:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:06:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get_id [2022-11-03 02:06:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get_id [2022-11-03 02:06:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:06:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:06:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_has_entry [2022-11-03 02:06:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_has_entry [2022-11-03 02:06:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2022-11-03 02:06:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2022-11-03 02:06:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_send_datagram [2022-11-03 02:06:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_send_datagram [2022-11-03 02:06:42,909 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 02:06:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 02:06:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get [2022-11-03 02:06:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get [2022-11-03 02:06:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_entry [2022-11-03 02:06:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_entry [2022-11-03 02:06:42,910 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-03 02:06:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-03 02:06:42,911 INFO L130 BoogieDeclarations]: Found specification of procedure qp_acquire_queue_mutex [2022-11-03 02:06:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_acquire_queue_mutex [2022-11-03 02:06:42,911 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_get_context_id [2022-11-03 02:06:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_get_context_id [2022-11-03 02:06:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_map_queues [2022-11-03 02:06:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_map_queues [2022-11-03 02:06:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_add [2022-11-03 02:06:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_add [2022-11-03 02:06:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:06:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:06:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:06:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:06:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock___1 [2022-11-03 02:06:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock___1 [2022-11-03 02:06:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2022-11-03 02:06:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2022-11-03 02:06:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_get_head [2022-11-03 02:06:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_get_head [2022-11-03 02:06:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2022-11-03 02:06:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2022-11-03 02:06:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2022-11-03 02:06:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2022-11-03 02:06:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2022-11-03 02:06:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2022-11-03 02:06:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:06:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:06:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:06:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:06:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:06:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_qp_list [2022-11-03 02:06:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_qp_list [2022-11-03 02:06:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2022-11-03 02:06:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2022-11-03 02:06:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:06:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-03 02:06:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-03 02:06:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:06:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:06:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:06:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:06:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:06:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:06:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2022-11-03 02:06:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2022-11-03 02:06:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:06:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:06:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:06:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure qp_reset_saved_headers [2022-11-03 02:06:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_reset_saved_headers [2022-11-03 02:06:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_handle [2022-11-03 02:06:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_handle [2022-11-03 02:06:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_add_entry [2022-11-03 02:06:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_add_entry [2022-11-03 02:06:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid [2022-11-03 02:06:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid [2022-11-03 02:06:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2022-11-03 02:06:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2022-11-03 02:06:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:06:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 02:06:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 02:06:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2022-11-03 02:06:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2022-11-03 02:06:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:06:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2022-11-03 02:06:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2022-11-03 02:06:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_find [2022-11-03 02:06:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_find [2022-11-03 02:06:42,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:06:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:06:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure __validate_creds [2022-11-03 02:06:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __validate_creds [2022-11-03 02:06:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-03 02:06:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-03 02:06:42,925 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_clear_notify_call [2022-11-03 02:06:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_clear_notify_call [2022-11-03 02:06:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 02:06:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 02:06:42,926 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2022-11-03 02:06:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2022-11-03 02:06:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:06:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:06:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:06:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:06:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_unset_notify [2022-11-03 02:06:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_unset_notify [2022-11-03 02:06:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure __hlist_del [2022-11-03 02:06:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __hlist_del [2022-11-03 02:06:42,928 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_exit [2022-11-03 02:06:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_exit [2022-11-03 02:06:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_destroy [2022-11-03 02:06:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_destroy [2022-11-03 02:06:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_cred [2022-11-03 02:06:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cred [2022-11-03 02:06:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 02:06:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 02:06:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 02:06:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 02:06:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure qp_lock [2022-11-03 02:06:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_lock [2022-11-03 02:06:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-03 02:06:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-03 02:06:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_by_handle [2022-11-03 02:06:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_by_handle [2022-11-03 02:06:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:06:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:06:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer_local [2022-11-03 02:06:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer_local [2022-11-03 02:06:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure vunmap [2022-11-03 02:06:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure vunmap [2022-11-03 02:06:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_get_user_memory [2022-11-03 02:06:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_get_user_memory [2022-11-03 02:06:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2022-11-03 02:06:42,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2022-11-03 02:06:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:06:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure qp_unlock [2022-11-03 02:06:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_unlock [2022-11-03 02:06:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2022-11-03 02:06:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2022-11-03 02:06:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:06:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_probe_device [2022-11-03 02:06:42,934 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_probe_device [2022-11-03 02:06:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___1 [2022-11-03 02:06:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___1 [2022-11-03 02:06:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___0 [2022-11-03 02:06:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___0 [2022-11-03 02:06:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_alloc_queue [2022-11-03 02:06:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_alloc_queue [2022-11-03 02:06:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:06:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:06:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2022-11-03 02:06:42,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2022-11-03 02:06:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:06:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:06:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_poll [2022-11-03 02:06:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_poll [2022-11-03 02:06:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:06:42,937 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:06:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:06:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:06:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_pages [2022-11-03 02:06:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_pages [2022-11-03 02:06:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure qp_cleanup_queue_mutex [2022-11-03 02:06:42,938 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_cleanup_queue_mutex [2022-11-03 02:06:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_size [2022-11-03 02:06:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_size [2022-11-03 02:06:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_hypercall [2022-11-03 02:06:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_hypercall [2022-11-03 02:06:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:06:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:06:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:06:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:06:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_remove_entry [2022-11-03 02:06:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_remove_entry [2022-11-03 02:06:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:06:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:06:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_q_header_init [2022-11-03 02:06:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_q_header_init [2022-11-03 02:06:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add_rcu [2022-11-03 02:06:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add_rcu [2022-11-03 02:06:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_register_user_memory [2022-11-03 02:06:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_register_user_memory [2022-11-03 02:06:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:06:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:06:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2022-11-03 02:06:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2022-11-03 02:06:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure drv_cp_harray_to_user [2022-11-03 02:06:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure drv_cp_harray_to_user [2022-11-03 02:06:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:06:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:06:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:06:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:06:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_tail [2022-11-03 02:06:42,944 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_tail [2022-11-03 02:06:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_subscriber_mutex [2022-11-03 02:06:42,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_subscriber_mutex [2022-11-03 02:06:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 02:06:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 02:06:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_supports_host_qp [2022-11-03 02:06:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_supports_host_qp [2022-11-03 02:06:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:06:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:06:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:06:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:06:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2022-11-03 02:06:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2022-11-03 02:06:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2022-11-03 02:06:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2022-11-03 02:06:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:06:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:06:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unmap_queues [2022-11-03 02:06:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unmap_queues [2022-11-03 02:06:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_rcu [2022-11-03 02:06:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_rcu [2022-11-03 02:06:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_qp_list [2022-11-03 02:06:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_qp_list [2022-11-03 02:06:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:06:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:06:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:06:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:06:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:06:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:06:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:06:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:06:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-03 02:06:42,950 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-03 02:06:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:06:42,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:06:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2022-11-03 02:06:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2022-11-03 02:06:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2022-11-03 02:06:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2022-11-03 02:06:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_notify_dbell [2022-11-03 02:06:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_notify_dbell [2022-11-03 02:06:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_append_entry [2022-11-03 02:06:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_append_entry [2022-11-03 02:06:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 02:06:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 02:06:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:06:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:06:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_handle_to_entry [2022-11-03 02:06:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_handle_to_entry [2022-11-03 02:06:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2022-11-03 02:06:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2022-11-03 02:06:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:06:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:06:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:06:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:06:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:06:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_hash [2022-11-03 02:06:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_hash [2022-11-03 02:06:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_create [2022-11-03 02:06:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_create [2022-11-03 02:06:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure event_find [2022-11-03 02:06:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure event_find [2022-11-03 02:06:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_alloc [2022-11-03 02:06:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_alloc [2022-11-03 02:06:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:06:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2022-11-03 02:06:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2022-11-03 02:06:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-03 02:06:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-03 02:06:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure hash_32 [2022-11-03 02:06:42,957 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_32 [2022-11-03 02:06:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail_rcu [2022-11-03 02:06:42,957 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail_rcu [2022-11-03 02:06:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock___1 [2022-11-03 02:06:42,957 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock___1 [2022-11-03 02:06:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2022-11-03 02:06:42,958 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2022-11-03 02:06:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:06:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2022-11-03 02:06:42,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2022-11-03 02:06:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:06:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:06:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:06:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:06:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:06:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:06:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_dispatch [2022-11-03 02:06:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_dispatch [2022-11-03 02:06:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_queue_mutex [2022-11-03 02:06:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_queue_mutex [2022-11-03 02:06:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:06:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:06:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_route [2022-11-03 02:06:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_route [2022-11-03 02:06:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2022-11-03 02:06:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2022-11-03 02:06:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure qp_free_queue [2022-11-03 02:06:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_free_queue [2022-11-03 02:06:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_free_queue [2022-11-03 02:06:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_free_queue [2022-11-03 02:06:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:06:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:06:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure atomic64_set [2022-11-03 02:06:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic64_set [2022-11-03 02:06:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2022-11-03 02:06:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2022-11-03 02:06:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_exists [2022-11-03 02:06:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_exists [2022-11-03 02:06:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-11-03 02:06:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-11-03 02:06:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2022-11-03 02:06:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2022-11-03 02:06:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:06:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:06:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure qp_init_queue_mutex [2022-11-03 02:06:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_init_queue_mutex [2022-11-03 02:06:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:06:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2022-11-03 02:06:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2022-11-03 02:06:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2022-11-03 02:06:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2022-11-03 02:06:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:06:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:06:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:06:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:06:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure put_cred [2022-11-03 02:06:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cred [2022-11-03 02:06:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work___0 [2022-11-03 02:06:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work___0 [2022-11-03 02:06:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-03 02:06:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-03 02:06:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:06:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:06:42,968 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2022-11-03 02:06:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2022-11-03 02:06:42,968 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_HLIST_NODE [2022-11-03 02:06:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_HLIST_NODE [2022-11-03 02:06:42,968 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:06:42,969 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:06:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:06:42,969 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:06:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_equal [2022-11-03 02:06:42,969 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_equal [2022-11-03 02:06:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_destroy [2022-11-03 02:06:42,970 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_destroy [2022-11-03 02:06:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_handle_to_entry [2022-11-03 02:06:42,970 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_handle_to_entry [2022-11-03 02:06:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 02:06:42,970 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 02:06:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2022-11-03 02:06:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2022-11-03 02:06:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure handle_arr_calc_size [2022-11-03 02:06:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_arr_calc_size [2022-11-03 02:06:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-03 02:06:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-03 02:06:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_unhashed [2022-11-03 02:06:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_unhashed [2022-11-03 02:06:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_alloc [2022-11-03 02:06:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_alloc [2022-11-03 02:06:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:06:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:06:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2022-11-03 02:06:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2022-11-03 02:06:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:06:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:06:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:06:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:06:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2022-11-03 02:06:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2022-11-03 02:06:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_get [2022-11-03 02:06:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_get [2022-11-03 02:06:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2022-11-03 02:06:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2022-11-03 02:06:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:06:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:06:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-03 02:06:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-03 02:06:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_entry [2022-11-03 02:06:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_entry [2022-11-03 02:06:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_unsubscribe [2022-11-03 02:06:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_unsubscribe [2022-11-03 02:06:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_deny_interaction [2022-11-03 02:06:42,977 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_deny_interaction [2022-11-03 02:06:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2022-11-03 02:06:42,977 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2022-11-03 02:06:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_create [2022-11-03 02:06:42,977 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_create [2022-11-03 02:06:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_code_active [2022-11-03 02:06:42,978 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_code_active [2022-11-03 02:06:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:06:42,978 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:06:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:06:42,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:06:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 02:06:42,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 02:06:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-03 02:06:42,979 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-03 02:06:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_lookup [2022-11-03 02:06:42,979 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_lookup [2022-11-03 02:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 02:06:42,980 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 02:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_create [2022-11-03 02:06:42,980 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_create [2022-11-03 02:06:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2022-11-03 02:06:42,980 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2022-11-03 02:06:44,340 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:06:44,350 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:44,821 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:07:06,259 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:07:09,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:07:09,663 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:07:09,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:09 BoogieIcfgContainer [2022-11-03 02:07:09,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:07:09,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:07:09,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:07:09,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:07:09,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:35" (1/3) ... [2022-11-03 02:07:09,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497dc41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:09, skipping insertion in model container [2022-11-03 02:07:09,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:41" (2/3) ... [2022-11-03 02:07:09,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497dc41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:09, skipping insertion in model container [2022-11-03 02:07:09,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:09" (3/3) ... [2022-11-03 02:07:09,683 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2022-11-03 02:07:09,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:07:09,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:07:09,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:09,835 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;@7e55c458, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:09,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:07:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 2672 states, 1624 states have (on average 1.3257389162561577) internal successors, (2153), 1691 states have internal predecessors, (2153), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) [2022-11-03 02:07:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:07:09,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:09,863 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] [2022-11-03 02:07:09,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1095675750, now seen corresponding path program 1 times [2022-11-03 02:07:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:09,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87949819] [2022-11-03 02:07:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:11,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:11,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87949819] [2022-11-03 02:07:11,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87949819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:11,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:11,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215795603] [2022-11-03 02:07:11,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:11,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:11,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:11,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:11,253 INFO L87 Difference]: Start difference. First operand has 2672 states, 1624 states have (on average 1.3257389162561577) internal successors, (2153), 1691 states have internal predecessors, (2153), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:07:14,895 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 [] [2022-11-03 02:07:18,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:21,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:24,243 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 [] [2022-11-03 02:07:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:24,424 INFO L93 Difference]: Finished difference Result 7941 states and 11637 transitions. [2022-11-03 02:07:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-03 02:07:24,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:24,533 INFO L225 Difference]: With dead ends: 7941 [2022-11-03 02:07:24,534 INFO L226 Difference]: Without dead ends: 5258 [2022-11-03 02:07:24,556 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 [2022-11-03 02:07:24,559 INFO L413 NwaCegarLoop]: 5917 mSDtfsCounter, 3741 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3745 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:24,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3745 Valid, 9323 Invalid, 942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 936 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 02:07:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2022-11-03 02:07:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5247. [2022-11-03 02:07:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 3202 states have (on average 1.320424734540912) internal successors, (4228), 3309 states have internal predecessors, (4228), 1641 states have call successors, (1641), 405 states have call predecessors, (1641), 403 states have return successors, (1629), 1613 states have call predecessors, (1629), 1626 states have call successors, (1629) [2022-11-03 02:07:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 7498 transitions. [2022-11-03 02:07:24,944 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 7498 transitions. Word has length 22 [2022-11-03 02:07:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:24,945 INFO L495 AbstractCegarLoop]: Abstraction has 5247 states and 7498 transitions. [2022-11-03 02:07:24,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:07:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 7498 transitions. [2022-11-03 02:07:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:07:24,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:24,958 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] [2022-11-03 02:07:24,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:07:24,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash -280132828, now seen corresponding path program 1 times [2022-11-03 02:07:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:24,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356540114] [2022-11-03 02:07:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:25,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:25,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356540114] [2022-11-03 02:07:25,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356540114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:25,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:25,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:25,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815518677] [2022-11-03 02:07:25,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:25,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:25,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:25,755 INFO L87 Difference]: Start difference. First operand 5247 states and 7498 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:28,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:30,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:33,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:35,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:35,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:35,803 INFO L93 Difference]: Finished difference Result 9410 states and 13331 transitions. [2022-11-03 02:07:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:35,806 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 02:07:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:35,837 INFO L225 Difference]: With dead ends: 9410 [2022-11-03 02:07:35,838 INFO L226 Difference]: Without dead ends: 5250 [2022-11-03 02:07:35,856 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 [2022-11-03 02:07:35,857 INFO L413 NwaCegarLoop]: 3443 mSDtfsCounter, 1 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6883 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:35,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6883 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 728 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 02:07:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2022-11-03 02:07:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5248. [2022-11-03 02:07:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 3203 states have (on average 1.320324695597877) internal successors, (4229), 3310 states have internal predecessors, (4229), 1641 states have call successors, (1641), 405 states have call predecessors, (1641), 403 states have return successors, (1629), 1613 states have call predecessors, (1629), 1626 states have call successors, (1629) [2022-11-03 02:07:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7499 transitions. [2022-11-03 02:07:36,143 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7499 transitions. Word has length 21 [2022-11-03 02:07:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:36,143 INFO L495 AbstractCegarLoop]: Abstraction has 5248 states and 7499 transitions. [2022-11-03 02:07:36,144 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:07:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7499 transitions. [2022-11-03 02:07:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:07:36,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:36,146 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] [2022-11-03 02:07:36,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:07:36,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1541064419, now seen corresponding path program 1 times [2022-11-03 02:07:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:36,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804343712] [2022-11-03 02:07:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:36,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:36,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804343712] [2022-11-03 02:07:36,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804343712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:36,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740099392] [2022-11-03 02:07:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:36,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:36,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:07:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:38,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 4844 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:07:38,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:38,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740099392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:38,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:07:38,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:07:38,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124957742] [2022-11-03 02:07:38,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:38,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:38,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:38,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:38,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:38,754 INFO L87 Difference]: Start difference. First operand 5248 states and 7499 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:07:41,491 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 [] [2022-11-03 02:07:43,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:45,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:46,047 INFO L93 Difference]: Finished difference Result 6675 states and 9420 transitions. [2022-11-03 02:07:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-03 02:07:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:46,089 INFO L225 Difference]: With dead ends: 6675 [2022-11-03 02:07:46,090 INFO L226 Difference]: Without dead ends: 6672 [2022-11-03 02:07:46,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:46,096 INFO L413 NwaCegarLoop]: 3896 mSDtfsCounter, 3779 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 5595 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:46,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 5595 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 02:07:46,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2022-11-03 02:07:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6664. [2022-11-03 02:07:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6664 states, 4031 states have (on average 1.309848672785909) internal successors, (5280), 4172 states have internal predecessors, (5280), 2069 states have call successors, (2069), 565 states have call predecessors, (2069), 563 states have return successors, (2061), 2036 states have call predecessors, (2061), 2055 states have call successors, (2061) [2022-11-03 02:07:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6664 states to 6664 states and 9410 transitions. [2022-11-03 02:07:46,443 INFO L78 Accepts]: Start accepts. Automaton has 6664 states and 9410 transitions. Word has length 26 [2022-11-03 02:07:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:46,443 INFO L495 AbstractCegarLoop]: Abstraction has 6664 states and 9410 transitions. [2022-11-03 02:07:46,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:07:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6664 states and 9410 transitions. [2022-11-03 02:07:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:07:46,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:46,448 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] [2022-11-03 02:07:46,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:46,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:46,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:46,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash 526993994, now seen corresponding path program 1 times [2022-11-03 02:07:46,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:46,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50263546] [2022-11-03 02:07:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:46,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:47,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:47,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50263546] [2022-11-03 02:07:47,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50263546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:47,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115819157] [2022-11-03 02:07:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:47,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:47,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:07:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:48,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:48,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:07:49,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:49,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115819157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:49,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:07:49,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:07:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143018008] [2022-11-03 02:07:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:49,043 INFO L87 Difference]: Start difference. First operand 6664 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:07:51,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:55,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:56,288 INFO L93 Difference]: Finished difference Result 6743 states and 9510 transitions. [2022-11-03 02:07:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:56,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-03 02:07:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:56,333 INFO L225 Difference]: With dead ends: 6743 [2022-11-03 02:07:56,334 INFO L226 Difference]: Without dead ends: 6740 [2022-11-03 02:07:56,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:56,339 INFO L413 NwaCegarLoop]: 3893 mSDtfsCounter, 3771 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3775 SdHoareTripleChecker+Valid, 5592 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:56,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3775 Valid, 5592 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 585 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:07:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2022-11-03 02:07:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 6732. [2022-11-03 02:07:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 4075 states have (on average 1.3101840490797545) internal successors, (5339), 4217 states have internal predecessors, (5339), 2084 states have call successors, (2084), 574 states have call predecessors, (2084), 572 states have return successors, (2077), 2052 states have call predecessors, (2077), 2071 states have call successors, (2077) [2022-11-03 02:07:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 9500 transitions. [2022-11-03 02:07:56,886 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 9500 transitions. Word has length 27 [2022-11-03 02:07:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:56,887 INFO L495 AbstractCegarLoop]: Abstraction has 6732 states and 9500 transitions. [2022-11-03 02:07:56,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:07:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 9500 transitions. [2022-11-03 02:07:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 02:07:56,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:56,889 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] [2022-11-03 02:07:56,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:57,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -336335809, now seen corresponding path program 1 times [2022-11-03 02:07:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:57,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475400173] [2022-11-03 02:07:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:57,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475400173] [2022-11-03 02:07:57,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475400173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:57,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:57,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934391360] [2022-11-03 02:07:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:57,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:57,607 INFO L87 Difference]: Start difference. First operand 6732 states and 9500 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:08:00,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:05,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:08,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:08,638 INFO L93 Difference]: Finished difference Result 18943 states and 26601 transitions. [2022-11-03 02:08:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:08,640 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-11-03 02:08:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:08,700 INFO L225 Difference]: With dead ends: 18943 [2022-11-03 02:08:08,700 INFO L226 Difference]: Without dead ends: 12212 [2022-11-03 02:08:08,728 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 [2022-11-03 02:08:08,729 INFO L413 NwaCegarLoop]: 4343 mSDtfsCounter, 3621 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:08,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 7776 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 756 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-11-03 02:08:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2022-11-03 02:08:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 12182. [2022-11-03 02:08:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12182 states, 7319 states have (on average 1.3025003415767182) internal successors, (9533), 7581 states have internal predecessors, (9533), 3765 states have call successors, (3765), 1102 states have call predecessors, (3765), 1097 states have return successors, (3769), 3709 states have call predecessors, (3769), 3752 states have call successors, (3769) [2022-11-03 02:08:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12182 states to 12182 states and 17067 transitions. [2022-11-03 02:08:09,356 INFO L78 Accepts]: Start accepts. Automaton has 12182 states and 17067 transitions. Word has length 37 [2022-11-03 02:08:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:09,356 INFO L495 AbstractCegarLoop]: Abstraction has 12182 states and 17067 transitions. [2022-11-03 02:08:09,357 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:08:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12182 states and 17067 transitions. [2022-11-03 02:08:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:08:09,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:09,360 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] [2022-11-03 02:08:09,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:08:09,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash -844413242, now seen corresponding path program 1 times [2022-11-03 02:08:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:09,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247576438] [2022-11-03 02:08:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:09,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:09,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247576438] [2022-11-03 02:08:09,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247576438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:09,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364156742] [2022-11-03 02:08:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:09,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:09,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:09,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:09,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:08:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:11,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 4848 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:08:11,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:08:11,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:11,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364156742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:11,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:08:11,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:08:11,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530272371] [2022-11-03 02:08:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:11,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:11,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:11,659 INFO L87 Difference]: Start difference. First operand 12182 states and 17067 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:08:14,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:16,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:20,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:22,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:24,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:24,904 INFO L93 Difference]: Finished difference Result 19442 states and 26849 transitions. [2022-11-03 02:08:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-03 02:08:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:24,983 INFO L225 Difference]: With dead ends: 19442 [2022-11-03 02:08:24,983 INFO L226 Difference]: Without dead ends: 19438 [2022-11-03 02:08:24,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:24,991 INFO L413 NwaCegarLoop]: 3897 mSDtfsCounter, 3709 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3711 SdHoareTripleChecker+Valid, 5745 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:24,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3711 Valid, 5745 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 604 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 02:08:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19438 states. [2022-11-03 02:08:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19438 to 19430. [2022-11-03 02:08:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19430 states, 11552 states have (on average 1.2905124653739612) internal successors, (14908), 11992 states have internal predecessors, (14908), 5953 states have call successors, (5953), 1931 states have call predecessors, (5953), 1924 states have return successors, (5974), 5866 states have call predecessors, (5974), 5942 states have call successors, (5974) [2022-11-03 02:08:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19430 states to 19430 states and 26835 transitions. [2022-11-03 02:08:26,152 INFO L78 Accepts]: Start accepts. Automaton has 19430 states and 26835 transitions. Word has length 28 [2022-11-03 02:08:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:26,154 INFO L495 AbstractCegarLoop]: Abstraction has 19430 states and 26835 transitions. [2022-11-03 02:08:26,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:08:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 19430 states and 26835 transitions. [2022-11-03 02:08:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:08:26,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:26,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:26,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:26,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:26,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash -408359731, now seen corresponding path program 1 times [2022-11-03 02:08:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:26,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779167359] [2022-11-03 02:08:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:26,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:26,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779167359] [2022-11-03 02:08:26,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779167359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:26,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698830761] [2022-11-03 02:08:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:26,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:26,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:26,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:26,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:08:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:28,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 4850 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:08:28,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:08:28,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:28,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698830761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:28,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:08:28,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:08:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792398772] [2022-11-03 02:08:28,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:28,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:28,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:28,610 INFO L87 Difference]: Start difference. First operand 19430 states and 26835 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:08:31,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:34,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:36,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:37,102 INFO L93 Difference]: Finished difference Result 19440 states and 26843 transitions. [2022-11-03 02:08:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-03 02:08:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:37,190 INFO L225 Difference]: With dead ends: 19440 [2022-11-03 02:08:37,190 INFO L226 Difference]: Without dead ends: 19437 [2022-11-03 02:08:37,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:37,202 INFO L413 NwaCegarLoop]: 3887 mSDtfsCounter, 3763 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3767 SdHoareTripleChecker+Valid, 5586 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:37,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3767 Valid, 5586 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 585 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 02:08:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19437 states. [2022-11-03 02:08:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19437 to 19429. [2022-11-03 02:08:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19429 states, 11552 states have (on average 1.2904259002770082) internal successors, (14907), 11991 states have internal predecessors, (14907), 5952 states have call successors, (5952), 1931 states have call predecessors, (5952), 1924 states have return successors, (5974), 5866 states have call predecessors, (5974), 5942 states have call successors, (5974) [2022-11-03 02:08:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19429 states to 19429 states and 26833 transitions. [2022-11-03 02:08:38,264 INFO L78 Accepts]: Start accepts. Automaton has 19429 states and 26833 transitions. Word has length 29 [2022-11-03 02:08:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:38,265 INFO L495 AbstractCegarLoop]: Abstraction has 19429 states and 26833 transitions. [2022-11-03 02:08:38,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:08:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 19429 states and 26833 transitions. [2022-11-03 02:08:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:08:38,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:38,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:38,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:08:38,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash 224402089, now seen corresponding path program 1 times [2022-11-03 02:08:38,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:38,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788712215] [2022-11-03 02:08:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:38,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:38,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788712215] [2022-11-03 02:08:38,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788712215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:38,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398843083] [2022-11-03 02:08:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:38,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:38,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:38,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:38,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:08:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:40,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:08:40,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:08:40,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:40,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398843083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:40,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:08:40,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:08:40,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75865697] [2022-11-03 02:08:40,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:40,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:40,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:40,683 INFO L87 Difference]: Start difference. First operand 19429 states and 26833 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:08:44,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:46,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:48,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:50,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:52,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:54,307 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 [] [2022-11-03 02:08:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:55,268 INFO L93 Difference]: Finished difference Result 52083 states and 73045 transitions. [2022-11-03 02:08:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-03 02:08:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:55,420 INFO L225 Difference]: With dead ends: 52083 [2022-11-03 02:08:55,420 INFO L226 Difference]: Without dead ends: 32655 [2022-11-03 02:08:55,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:55,506 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 3196 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:55,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3196 Valid, 6230 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 688 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2022-11-03 02:08:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32655 states. [2022-11-03 02:08:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32655 to 32546. [2022-11-03 02:08:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32546 states, 19242 states have (on average 1.2815195925579461) internal successors, (24659), 19984 states have internal predecessors, (24659), 9837 states have call successors, (9837), 3451 states have call predecessors, (9837), 3466 states have return successors, (10430), 9734 states have call predecessors, (10430), 9823 states have call successors, (10430) [2022-11-03 02:08:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32546 states to 32546 states and 44926 transitions. [2022-11-03 02:08:57,611 INFO L78 Accepts]: Start accepts. Automaton has 32546 states and 44926 transitions. Word has length 30 [2022-11-03 02:08:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:57,614 INFO L495 AbstractCegarLoop]: Abstraction has 32546 states and 44926 transitions. [2022-11-03 02:08:57,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:08:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 32546 states and 44926 transitions. [2022-11-03 02:08:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:08:57,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:57,615 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] [2022-11-03 02:08:57,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:57,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:57,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:57,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1634813104, now seen corresponding path program 1 times [2022-11-03 02:08:57,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:57,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401923920] [2022-11-03 02:08:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:08:58,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:58,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401923920] [2022-11-03 02:08:58,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401923920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:58,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850272260] [2022-11-03 02:08:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:58,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:58,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:58,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:58,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:08:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:59,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 4854 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:08:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:00,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:00,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850272260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:00,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:00,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:09:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646719871] [2022-11-03 02:09:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:00,016 INFO L87 Difference]: Start difference. First operand 32546 states and 44926 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:02,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:05,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:10,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:12,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:16,507 INFO L93 Difference]: Finished difference Result 97544 states and 139163 transitions. [2022-11-03 02:09:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-11-03 02:09:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:16,867 INFO L225 Difference]: With dead ends: 97544 [2022-11-03 02:09:16,867 INFO L226 Difference]: Without dead ends: 64999 [2022-11-03 02:09:17,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:17,025 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 3844 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:17,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3844 Valid, 7983 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 748 Invalid, 3 Unknown, 0 Unchecked, 13.6s Time] [2022-11-03 02:09:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64999 states. [2022-11-03 02:09:20,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64999 to 64941. [2022-11-03 02:09:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64941 states, 38402 states have (on average 1.2815217957398053) internal successors, (49213), 39879 states have internal predecessors, (49213), 19628 states have call successors, (19628), 6890 states have call predecessors, (19628), 6910 states have return successors, (23093), 19419 states have call predecessors, (23093), 19613 states have call successors, (23093) [2022-11-03 02:09:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64941 states to 64941 states and 91934 transitions. [2022-11-03 02:09:21,216 INFO L78 Accepts]: Start accepts. Automaton has 64941 states and 91934 transitions. Word has length 31 [2022-11-03 02:09:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:21,216 INFO L495 AbstractCegarLoop]: Abstraction has 64941 states and 91934 transitions. [2022-11-03 02:09:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 64941 states and 91934 transitions. [2022-11-03 02:09:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:09:21,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:21,218 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] [2022-11-03 02:09:21,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:21,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:21,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash 859062924, now seen corresponding path program 1 times [2022-11-03 02:09:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522405013] [2022-11-03 02:09:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:09:21,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522405013] [2022-11-03 02:09:21,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522405013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:21,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017632837] [2022-11-03 02:09:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:21,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:21,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:21,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:09:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:23,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 4856 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:23,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:09:23,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:23,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017632837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:23,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:23,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:09:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506221726] [2022-11-03 02:09:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:23,760 INFO L87 Difference]: Start difference. First operand 64941 states and 91934 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:26,445 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 [] [2022-11-03 02:09:29,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:31,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:33,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:37,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:39,985 INFO L93 Difference]: Finished difference Result 127250 states and 189972 transitions. [2022-11-03 02:09:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-03 02:09:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:40,815 INFO L225 Difference]: With dead ends: 127250 [2022-11-03 02:09:40,815 INFO L226 Difference]: Without dead ends: 127213 [2022-11-03 02:09:40,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:40,896 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 3804 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3804 SdHoareTripleChecker+Valid, 7808 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:40,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3804 Valid, 7808 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 731 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 02:09:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127213 states. [2022-11-03 02:09:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127213 to 127182. [2022-11-03 02:09:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127182 states, 75231 states have (on average 1.2802701014209568) internal successors, (96316), 78129 states have internal predecessors, (96316), 38387 states have call successors, (38387), 13630 states have call predecessors, (38387), 13563 states have return successors, (55140), 37852 states have call predecessors, (55140), 38370 states have call successors, (55140) [2022-11-03 02:09:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127182 states to 127182 states and 189843 transitions. [2022-11-03 02:09:49,362 INFO L78 Accepts]: Start accepts. Automaton has 127182 states and 189843 transitions. Word has length 32 [2022-11-03 02:09:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:49,363 INFO L495 AbstractCegarLoop]: Abstraction has 127182 states and 189843 transitions. [2022-11-03 02:09:49,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:09:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 127182 states and 189843 transitions. [2022-11-03 02:09:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:09:49,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:49,370 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:49,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee5ac88-6dd9-4ce0-b3b5-a2b9ff2e8d7b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:49,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1906739628, now seen corresponding path program 1 times [2022-11-03 02:09:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:49,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658502742] [2022-11-03 02:09:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:09:50,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:50,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658502742] [2022-11-03 02:09:50,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658502742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:50,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:50,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536350261] [2022-11-03 02:09:50,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:50,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:50,413 INFO L87 Difference]: Start difference. First operand 127182 states and 189843 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:09:57,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:59,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:02,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []