./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.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_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/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_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/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_0b5b7393-7c4c-416c-a307-29b65b233c35/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 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- 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 02:14:25,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:25,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:25,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:25,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:25,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:25,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:25,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:25,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:25,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:25,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:25,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:25,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:25,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:25,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:25,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:25,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:25,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:25,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:25,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:25,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:25,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:25,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:25,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:25,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:25,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:25,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:25,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:25,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:25,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:25,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:25,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:25,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:25,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:25,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:25,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:25,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:25,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:25,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:25,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:25,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:25,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:14:25,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:25,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:25,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:25,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:25,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:25,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:25,229 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:25,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:25,229 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:25,230 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:25,230 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:25,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:25,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:25,230 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:25,231 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:25,231 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:25,231 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:25,231 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:25,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:25,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:25,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:25,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:25,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:25,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:25,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:25,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:25,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:25,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:25,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:25,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:25,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:25,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:25,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:25,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:25,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:25,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:25,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:25,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:25,238 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_0b5b7393-7c4c-416c-a307-29b65b233c35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2022-11-03 02:14:25,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:25,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:25,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:25,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:25,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:25,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-03 02:14:25,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/data/7c0490513/edc66b004d6745ce97bbf91d4ddca5cb/FLAGb459ef88f [2022-11-03 02:14:26,880 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:26,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-03 02:14:26,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/data/7c0490513/edc66b004d6745ce97bbf91d4ddca5cb/FLAGb459ef88f [2022-11-03 02:14:27,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/data/7c0490513/edc66b004d6745ce97bbf91d4ddca5cb [2022-11-03 02:14:27,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:27,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:27,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:27,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:27,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:27,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf9f5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27, skipping insertion in model container [2022-11-03 02:14:27,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:27,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:30,731 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_0b5b7393-7c4c-416c-a307-29b65b233c35/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-03 02:14:30,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:30,931 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:31,780 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_0b5b7393-7c4c-416c-a307-29b65b233c35/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-03 02:14:31,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:32,170 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:32,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32 WrapperNode [2022-11-03 02:14:32,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:32,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:32,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:32,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:32,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:32,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:32,826 INFO L138 Inliner]: procedures = 367, calls = 5915, calls flagged for inlining = 162, calls inlined = 160, statements flattened = 12636 [2022-11-03 02:14:32,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:32,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:32,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:32,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:32,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:32,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:32,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:32,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:33,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:33,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:33,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:33,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:33,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:33,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:33,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:33,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:33,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (1/1) ... [2022-11-03 02:14:33,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:33,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:33,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:14:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:14:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:14:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:14:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure map_index_to_lba [2022-11-03 02:14:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure map_index_to_lba [2022-11-03 02:14:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure sector_size_show [2022-11-03 02:14:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_size_show [2022-11-03 02:14:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:14:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:14:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:14:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:14:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure dif_show [2022-11-03 02:14:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_show [2022-11-03 02:14:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:14:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:14:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure stop_all_queued [2022-11-03 02:14:33,654 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_all_queued [2022-11-03 02:14:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_remove_adapter [2022-11-03 02:14:33,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_remove_adapter [2022-11-03 02:14:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_lbp [2022-11-03 02:14:33,654 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_lbp [2022-11-03 02:14:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2022-11-03 02:14:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2022-11-03 02:14:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 02:14:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 02:14:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_host_reset [2022-11-03 02:14:33,656 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_host_reset [2022-11-03 02:14:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:14:33,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:14:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:14:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:14:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-03 02:14:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-03 02:14:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure dev_size_mb_show [2022-11-03 02:14:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_size_mb_show [2022-11-03 02:14:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:14:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:14:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure num_parts_show [2022-11-03 02:14:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure num_parts_show [2022-11-03 02:14:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_level_show [2022-11-03 02:14:33,659 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_level_show [2022-11-03 02:14:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-11-03 02:14:33,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-11-03 02:14:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-11-03 02:14:33,660 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-11-03 02:14:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure fill_from_dev_buffer [2022-11-03 02:14:33,661 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_from_dev_buffer [2022-11-03 02:14:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_destroy [2022-11-03 02:14:33,663 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_destroy [2022-11-03 02:14:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure map_region [2022-11-03 02:14:33,663 INFO L138 BoogieDeclarations]: Found implementation of procedure map_region [2022-11-03 02:14:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:14:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:14:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:14:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:14:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_to_dev_buffer [2022-11-03 02:14:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_to_dev_buffer [2022-11-03 02:14:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:14:33,666 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:14:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_set_guard [2022-11-03 02:14:33,666 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_set_guard [2022-11-03 02:14:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:14:33,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:14:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_info [2022-11-03 02:14:33,667 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_info [2022-11-03 02:14:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-03 02:14:33,667 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-03 02:14:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_abort [2022-11-03 02:14:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_abort [2022-11-03 02:14:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 02:14:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 02:14:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_resp [2022-11-03 02:14:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_resp [2022-11-03 02:14:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure pseudo_lld_bus_match [2022-11-03 02:14:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pseudo_lld_bus_match [2022-11-03 02:14:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:14:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure host_lock_show [2022-11-03 02:14:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure host_lock_show [2022-11-03 02:14:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:14:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_bus_reset [2022-11-03 02:14:33,672 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_bus_reset [2022-11-03 02:14:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure no_lun_0_show [2022-11-03 02:14:33,673 INFO L138 BoogieDeclarations]: Found implementation of procedure no_lun_0_show [2022-11-03 02:14:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure dif_copy_prot [2022-11-03 02:14:33,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_copy_prot [2022-11-03 02:14:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:14:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be64 [2022-11-03 02:14:33,675 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be64 [2022-11-03 02:14:33,675 INFO L130 BoogieDeclarations]: Found specification of procedure resp_err_recov_pg [2022-11-03 02:14:33,675 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_err_recov_pg [2022-11-03 02:14:33,676 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:14:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure map_show [2022-11-03 02:14:33,677 INFO L138 BoogieDeclarations]: Found implementation of procedure map_show [2022-11-03 02:14:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure no_uld_show [2022-11-03 02:14:33,677 INFO L138 BoogieDeclarations]: Found implementation of procedure no_uld_show [2022-11-03 02:14:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:14:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:14:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:14:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:14:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:14:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:14:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_build_sense_buffer [2022-11-03 02:14:33,680 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_build_sense_buffer [2022-11-03 02:14:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:14:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:14:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure removable_show [2022-11-03 02:14:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure removable_show [2022-11-03 02:14:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:14:33,682 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:14:33,682 INFO L130 BoogieDeclarations]: Found specification of procedure num_tgts_show [2022-11-03 02:14:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure num_tgts_show [2022-11-03 02:14:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_device_create [2022-11-03 02:14:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_device_create [2022-11-03 02:14:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:14:33,689 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:14:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_pcd_m_spg [2022-11-03 02:14:33,689 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_pcd_m_spg [2022-11-03 02:14:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:14:33,689 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:14:33,695 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:14:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:14:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure find_last_bit [2022-11-03 02:14:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure find_last_bit [2022-11-03 02:14:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_ioctl [2022-11-03 02:14:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_ioctl [2022-11-03 02:14:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure max_queue_show [2022-11-03 02:14:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure max_queue_show [2022-11-03 02:14:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2022-11-03 02:14:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2022-11-03 02:14:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:14:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:14:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure check_device_access_params [2022-11-03 02:14:33,698 INFO L138 BoogieDeclarations]: Found implementation of procedure check_device_access_params [2022-11-03 02:14:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_priv [2022-11-03 02:14:33,698 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_priv [2022-11-03 02:14:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:14:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2022-11-03 02:14:33,698 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2022-11-03 02:14:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure strict_show [2022-11-03 02:14:33,699 INFO L138 BoogieDeclarations]: Found implementation of procedure strict_show [2022-11-03 02:14:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure dif_verify [2022-11-03 02:14:33,699 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_verify [2022-11-03 02:14:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sf_m_pg [2022-11-03 02:14:33,699 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sf_m_pg [2022-11-03 02:14:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-03 02:14:33,700 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-03 02:14:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2022-11-03 02:14:33,700 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2022-11-03 02:14:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure resp_read_dt0 [2022-11-03 02:14:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_read_dt0 [2022-11-03 02:14:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:14:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure resp_disconnect_pg [2022-11-03 02:14:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_disconnect_pg [2022-11-03 02:14:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-03 02:14:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-03 02:14:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure dsense_show [2022-11-03 02:14:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure dsense_show [2022-11-03 02:14:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:14:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure resp_format_pg [2022-11-03 02:14:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_format_pg [2022-11-03 02:14:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-03 02:14:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-03 02:14:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure lba_to_map_index [2022-11-03 02:14:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure lba_to_map_index [2022-11-03 02:14:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sglist [2022-11-03 02:14:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sglist [2022-11-03 02:14:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:14:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:14:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_same [2022-11-03 02:14:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_same [2022-11-03 02:14:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:14:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:14:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-11-03 02:14:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-11-03 02:14:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure ndelay_show [2022-11-03 02:14:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ndelay_show [2022-11-03 02:14:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be64 [2022-11-03 02:14:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be64 [2022-11-03 02:14:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure resp_caching_pg [2022-11-03 02:14:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_caching_pg [2022-11-03 02:14:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:14:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:14:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2022-11-03 02:14:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2022-11-03 02:14:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:14:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:14:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:14:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:14:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_alloc [2022-11-03 02:14:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_alloc [2022-11-03 02:14:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure resp_iec_m_pg [2022-11-03 02:14:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_iec_m_pg [2022-11-03 02:14:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:14:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_dt0 [2022-11-03 02:14:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_dt0 [2022-11-03 02:14:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_change_qdepth [2022-11-03 02:14:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_change_qdepth [2022-11-03 02:14:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2022-11-03 02:14:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2022-11-03 02:14:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:14:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:14:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_show_info [2022-11-03 02:14:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_show_info [2022-11-03 02:14:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ptype_show [2022-11-03 02:14:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ptype_show [2022-11-03 02:14:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:14:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:14:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure root_device_unregister [2022-11-03 02:14:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure root_device_unregister [2022-11-03 02:14:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:14:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure unmap_region [2022-11-03 02:14:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure unmap_region [2022-11-03 02:14:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure fake_rw_show [2022-11-03 02:14:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure fake_rw_show [2022-11-03 02:14:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-03 02:14:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-03 02:14:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:14:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:14:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:14:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:14:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_fld [2022-11-03 02:14:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_fld [2022-11-03 02:14:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-03 02:14:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-03 02:14:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure max_luns_show [2022-11-03 02:14:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure max_luns_show [2022-11-03 02:14:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-11-03 02:14:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-11-03 02:14:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:14:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:14:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-03 02:14:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-03 02:14:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure opts_show [2022-11-03 02:14:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure opts_show [2022-11-03 02:14:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:14:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-03 02:14:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-03 02:14:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:14:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:14:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure devInfoReg [2022-11-03 02:14:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure devInfoReg [2022-11-03 02:14:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure guard_show [2022-11-03 02:14:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure guard_show [2022-11-03 02:14:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_device_reset [2022-11-03 02:14:33,723 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_device_reset [2022-11-03 02:14:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-11-03 02:14:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-11-03 02:14:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-11-03 02:14:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-11-03 02:14:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-03 02:14:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-03 02:14:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_max_tgts_luns [2022-11-03 02:14:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_max_tgts_luns [2022-11-03 02:14:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_configure [2022-11-03 02:14:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_configure [2022-11-03 02:14:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be32 [2022-11-03 02:14:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be32 [2022-11-03 02:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bidi_cmnd [2022-11-03 02:14:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bidi_cmnd [2022-11-03 02:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 02:14:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 02:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:14:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:14:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2022-11-03 02:14:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2022-11-03 02:14:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure do_device_access [2022-11-03 02:14:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure do_device_access [2022-11-03 02:14:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure virtual_gb_show [2022-11-03 02:14:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure virtual_gb_show [2022-11-03 02:14:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure vpd_use_hostno_show [2022-11-03 02:14:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure vpd_use_hostno_show [2022-11-03 02:14:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_target_reset [2022-11-03 02:14:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_target_reset [2022-11-03 02:14:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure dix_show [2022-11-03 02:14:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dix_show [2022-11-03 02:14:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure every_nth_show [2022-11-03 02:14:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure every_nth_show [2022-11-03 02:14:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-03 02:14:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-03 02:14:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-11-03 02:14:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-11-03 02:14:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure clear_luns_changed_on_target [2022-11-03 02:14:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_luns_changed_on_target [2022-11-03 02:14:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sg_count [2022-11-03 02:14:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sg_count [2022-11-03 02:14:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure ato_show [2022-11-03 02:14:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ato_show [2022-11-03 02:14:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_buffer [2022-11-03 02:14:33,733 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_buffer [2022-11-03 02:14:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sha_m_spg [2022-11-03 02:14:33,733 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sha_m_spg [2022-11-03 02:14:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:14:33,733 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:14:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure add_host_show [2022-11-03 02:14:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure add_host_show [2022-11-03 02:14:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_add_adapter [2022-11-03 02:14:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_add_adapter [2022-11-03 02:14:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_copy_to_buffer [2022-11-03 02:14:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_copy_to_buffer [2022-11-03 02:14:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:14:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:14:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure dif_store [2022-11-03 02:14:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_store [2022-11-03 02:14:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:14:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:14:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_opcode [2022-11-03 02:14:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_opcode [2022-11-03 02:14:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:14:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:14:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_buffer [2022-11-03 02:14:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_buffer [2022-11-03 02:14:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_set_resid [2022-11-03 02:14:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_set_resid [2022-11-03 02:14:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-03 02:14:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-03 02:14:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure delay_show [2022-11-03 02:14:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure delay_show [2022-11-03 02:14:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-03 02:14:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-03 02:14:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure get_sdebug_capacity [2022-11-03 02:14:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sdebug_capacity [2022-11-03 02:14:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure resp_ctrl_m_pg [2022-11-03 02:14:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_ctrl_m_pg [2022-11-03 02:14:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:14:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:14:35,157 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:35,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:36,496 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:15:25,829 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:15:29,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:15:29,376 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:15:29,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:15:29 BoogieIcfgContainer [2022-11-03 02:15:29,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:15:29,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:15:29,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:15:29,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:15:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:27" (1/3) ... [2022-11-03 02:15:29,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eeb971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:15:29, skipping insertion in model container [2022-11-03 02:15:29,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:32" (2/3) ... [2022-11-03 02:15:29,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eeb971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:15:29, skipping insertion in model container [2022-11-03 02:15:29,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:15:29" (3/3) ... [2022-11-03 02:15:29,397 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-03 02:15:29,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:15:29,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:15:29,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:15:29,544 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;@6c186e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:15:29,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:15:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 2826 states, 1840 states have (on average 1.4260869565217391) internal successors, (2624), 1926 states have internal predecessors, (2624), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) [2022-11-03 02:15:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2022-11-03 02:15:29,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:29,630 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:29,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1003520922, now seen corresponding path program 1 times [2022-11-03 02:15:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:29,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286520929] [2022-11-03 02:15:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-03 02:15:33,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:33,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286520929] [2022-11-03 02:15:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286520929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:33,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:15:33,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:15:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34291139] [2022-11-03 02:15:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:33,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:15:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:15:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:15:33,187 INFO L87 Difference]: Start difference. First operand has 2826 states, 1840 states have (on average 1.4260869565217391) internal successors, (2624), 1926 states have internal predecessors, (2624), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-03 02:15:35,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:39,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:41,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:43,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:46,613 WARN L539 Checker$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 02:15:48,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:52,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:55,561 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 02:15:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:58,870 INFO L93 Difference]: Finished difference Result 8092 states and 12255 transitions. [2022-11-03 02:15:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:15:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 907 [2022-11-03 02:15:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:58,934 INFO L225 Difference]: With dead ends: 8092 [2022-11-03 02:15:58,934 INFO L226 Difference]: Without dead ends: 5306 [2022-11-03 02:15:58,962 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 02:15:58,970 INFO L413 NwaCegarLoop]: 4571 mSDtfsCounter, 3886 mSDsluCounter, 4231 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3890 SdHoareTripleChecker+Valid, 8424 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:58,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3890 Valid, 8424 Invalid, 779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 771 Invalid, 7 Unknown, 0 Unchecked, 25.2s Time] [2022-11-03 02:15:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2022-11-03 02:15:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 5298. [2022-11-03 02:15:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 3519 states have (on average 1.4174481386757602) internal successors, (4988), 3625 states have internal predecessors, (4988), 1472 states have call successors, (1472), 307 states have call predecessors, (1472), 306 states have return successors, (1472), 1443 states have call predecessors, (1472), 1470 states have call successors, (1472) [2022-11-03 02:15:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 7932 transitions. [2022-11-03 02:15:59,430 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 7932 transitions. Word has length 907 [2022-11-03 02:15:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:59,437 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 7932 transitions. [2022-11-03 02:15:59,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-03 02:15:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 7932 transitions. [2022-11-03 02:15:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2022-11-03 02:15:59,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:59,484 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:59,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:15:59,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2074089755, now seen corresponding path program 1 times [2022-11-03 02:15:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:59,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671454103] [2022-11-03 02:15:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-03 02:16:01,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:01,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671454103] [2022-11-03 02:16:01,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671454103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:01,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:01,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:01,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091084247] [2022-11-03 02:16:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:01,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:01,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:01,457 INFO L87 Difference]: Start difference. First operand 5298 states and 7932 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-03 02:16:03,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:07,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:09,636 WARN L539 Checker$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 02:16:11,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:15,805 WARN L539 Checker$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 02:16:18,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:16:20,832 WARN L539 Checker$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 02:16:22,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:28,014 WARN L539 Checker$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 02:16:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:28,483 INFO L93 Difference]: Finished difference Result 15445 states and 23129 transitions. [2022-11-03 02:16:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:28,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 914 [2022-11-03 02:16:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:28,578 INFO L225 Difference]: With dead ends: 15445 [2022-11-03 02:16:28,578 INFO L226 Difference]: Without dead ends: 10308 [2022-11-03 02:16:28,614 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 02:16:28,615 INFO L413 NwaCegarLoop]: 4494 mSDtfsCounter, 3735 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 8238 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:28,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 8238 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 765 Invalid, 8 Unknown, 0 Unchecked, 26.5s Time] [2022-11-03 02:16:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10308 states. [2022-11-03 02:16:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10308 to 10297. [2022-11-03 02:16:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10297 states, 6870 states have (on average 1.4235807860262009) internal successors, (9780), 7082 states have internal predecessors, (9780), 2820 states have call successors, (2820), 607 states have call predecessors, (2820), 606 states have return successors, (2824), 2761 states have call predecessors, (2824), 2818 states have call successors, (2824) [2022-11-03 02:16:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10297 states to 10297 states and 15424 transitions. [2022-11-03 02:16:29,531 INFO L78 Accepts]: Start accepts. Automaton has 10297 states and 15424 transitions. Word has length 914 [2022-11-03 02:16:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:29,535 INFO L495 AbstractCegarLoop]: Abstraction has 10297 states and 15424 transitions. [2022-11-03 02:16:29,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-03 02:16:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10297 states and 15424 transitions. [2022-11-03 02:16:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2022-11-03 02:16:29,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:29,551 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:16:29,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1905963265, now seen corresponding path program 1 times [2022-11-03 02:16:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:29,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384914789] [2022-11-03 02:16:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:30,340 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:16:30,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560084045] [2022-11-03 02:16:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:30,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:30,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:30,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:30,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:16:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:34,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 14428 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:16:34,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-03 02:16:40,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:40,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:40,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384914789] [2022-11-03 02:16:40,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:16:40,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560084045] [2022-11-03 02:16:40,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560084045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:40,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:40,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:16:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230635738] [2022-11-03 02:16:40,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:40,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:40,496 INFO L87 Difference]: Start difference. First operand 10297 states and 15424 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-03 02:16:42,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:46,821 WARN L539 Checker$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 02:16:48,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:51,113 WARN L539 Checker$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 02:16:56,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:59,843 WARN L539 Checker$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 02:17:01,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:03,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:04,469 INFO L93 Difference]: Finished difference Result 19251 states and 28932 transitions. [2022-11-03 02:17:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 918 [2022-11-03 02:17:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:04,595 INFO L225 Difference]: With dead ends: 19251 [2022-11-03 02:17:04,595 INFO L226 Difference]: Without dead ends: 19247 [2022-11-03 02:17:04,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 916 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 02:17:04,611 INFO L413 NwaCegarLoop]: 4444 mSDtfsCounter, 3602 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3606 SdHoareTripleChecker+Valid, 7766 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:04,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3606 Valid, 7766 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 732 Invalid, 6 Unknown, 0 Unchecked, 23.5s Time] [2022-11-03 02:17:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19247 states. [2022-11-03 02:17:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19247 to 19100. [2022-11-03 02:17:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19100 states, 12888 states have (on average 1.4289261328367473) internal successors, (18416), 13253 states have internal predecessors, (18416), 5081 states have call successors, (5081), 1135 states have call predecessors, (5081), 1130 states have return successors, (5173), 4961 states have call predecessors, (5173), 5079 states have call successors, (5173) [2022-11-03 02:17:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19100 states to 19100 states and 28670 transitions. [2022-11-03 02:17:05,622 INFO L78 Accepts]: Start accepts. Automaton has 19100 states and 28670 transitions. Word has length 918 [2022-11-03 02:17:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:05,624 INFO L495 AbstractCegarLoop]: Abstraction has 19100 states and 28670 transitions. [2022-11-03 02:17:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-03 02:17:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19100 states and 28670 transitions. [2022-11-03 02:17:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-11-03 02:17:05,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:05,638 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:05,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:17:05,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:17:05,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash 880328691, now seen corresponding path program 1 times [2022-11-03 02:17:05,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:05,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287308113] [2022-11-03 02:17:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-03 02:17:07,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287308113] [2022-11-03 02:17:07,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287308113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:07,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:07,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:07,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243930539] [2022-11-03 02:17:07,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:07,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:07,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:07,759 INFO L87 Difference]: Start difference. First operand 19100 states and 28670 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 02:17:09,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:15,555 WARN L539 Checker$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 02:17:17,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:19,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:17:21,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:26,482 WARN L539 Checker$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 02:17:29,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:31,233 INFO L93 Difference]: Finished difference Result 43521 states and 65050 transitions. [2022-11-03 02:17:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 936 [2022-11-03 02:17:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:31,363 INFO L225 Difference]: With dead ends: 43521 [2022-11-03 02:17:31,364 INFO L226 Difference]: Without dead ends: 24582 [2022-11-03 02:17:31,452 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 02:17:31,454 INFO L413 NwaCegarLoop]: 4034 mSDtfsCounter, 1168 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 7692 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:31,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 7692 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 850 Invalid, 7 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 02:17:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24582 states. [2022-11-03 02:17:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24582 to 24578. [2022-11-03 02:17:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24578 states, 17018 states have (on average 1.4455282641908567) internal successors, (24600), 17509 states have internal predecessors, (24600), 5955 states have call successors, (5955), 1613 states have call predecessors, (5955), 1604 states have return successors, (6053), 5795 states have call predecessors, (6053), 5953 states have call successors, (6053) [2022-11-03 02:17:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 36608 transitions. [2022-11-03 02:17:32,756 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 36608 transitions. Word has length 936 [2022-11-03 02:17:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:32,757 INFO L495 AbstractCegarLoop]: Abstraction has 24578 states and 36608 transitions. [2022-11-03 02:17:32,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 02:17:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 36608 transitions. [2022-11-03 02:17:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-11-03 02:17:32,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:32,777 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 59, 20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:17:32,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:32,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash -438169623, now seen corresponding path program 1 times [2022-11-03 02:17:32,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:32,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037556847] [2022-11-03 02:17:32,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:32,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18452 trivial. 0 not checked. [2022-11-03 02:17:34,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037556847] [2022-11-03 02:17:34,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037556847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:34,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:34,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006015000] [2022-11-03 02:17:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:34,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:34,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:34,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:34,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:34,544 INFO L87 Difference]: Start difference. First operand 24578 states and 36608 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-03 02:17:36,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:38,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:17:41,821 WARN L539 Checker$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 02:17:43,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:45,999 WARN L539 Checker$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 02:17:49,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:52,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:58,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:58,922 INFO L93 Difference]: Finished difference Result 72668 states and 108253 transitions. [2022-11-03 02:17:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 983 [2022-11-03 02:17:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:59,156 INFO L225 Difference]: With dead ends: 72668 [2022-11-03 02:17:59,156 INFO L226 Difference]: Without dead ends: 48251 [2022-11-03 02:17:59,241 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 02:17:59,242 INFO L413 NwaCegarLoop]: 4445 mSDtfsCounter, 3754 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3760 SdHoareTripleChecker+Valid, 8185 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:59,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3760 Valid, 8185 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 770 Invalid, 6 Unknown, 0 Unchecked, 23.0s Time] [2022-11-03 02:17:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48251 states. [2022-11-03 02:18:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48251 to 48238. [2022-11-03 02:18:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48238 states, 33434 states have (on average 1.44643177603637) internal successors, (48360), 34373 states have internal predecessors, (48360), 11647 states have call successors, (11647), 3173 states have call predecessors, (11647), 3156 states have return successors, (11849), 11339 states have call predecessors, (11849), 11645 states have call successors, (11849) [2022-11-03 02:18:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48238 states to 48238 states and 71856 transitions. [2022-11-03 02:18:01,655 INFO L78 Accepts]: Start accepts. Automaton has 48238 states and 71856 transitions. Word has length 983 [2022-11-03 02:18:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:01,657 INFO L495 AbstractCegarLoop]: Abstraction has 48238 states and 71856 transitions. [2022-11-03 02:18:01,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-03 02:18:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 48238 states and 71856 transitions. [2022-11-03 02:18:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2022-11-03 02:18:01,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:01,678 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 21, 21, 20, 20, 20, 20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:01,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:18:01,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1418333920, now seen corresponding path program 1 times [2022-11-03 02:18:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:01,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522201225] [2022-11-03 02:18:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:01,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:02,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:18:02,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184652260] [2022-11-03 02:18:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:02,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:02,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:02,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:02,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:18:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:06,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 15166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:06,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 17939 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17928 trivial. 0 not checked. [2022-11-03 02:18:12,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:12,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:12,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522201225] [2022-11-03 02:18:12,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:18:12,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184652260] [2022-11-03 02:18:12,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184652260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:12,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:12,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:18:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143808928] [2022-11-03 02:18:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:12,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:12,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:12,247 INFO L87 Difference]: Start difference. First operand 48238 states and 71856 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-03 02:18:14,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:19,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:21,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:23,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:27,274 WARN L539 Checker$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 02:18:29,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:31,785 WARN L539 Checker$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 02:18:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:32,393 INFO L93 Difference]: Finished difference Result 96636 states and 143784 transitions. [2022-11-03 02:18:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 1008 [2022-11-03 02:18:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:32,653 INFO L225 Difference]: With dead ends: 96636 [2022-11-03 02:18:32,653 INFO L226 Difference]: Without dead ends: 48559 [2022-11-03 02:18:32,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 1006 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 02:18:32,813 INFO L413 NwaCegarLoop]: 3758 mSDtfsCounter, 3768 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3774 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:32,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3774 Valid, 3834 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 7 Unknown, 0 Unchecked, 18.7s Time] [2022-11-03 02:18:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48559 states. [2022-11-03 02:18:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48559 to 48559. [2022-11-03 02:18:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48559 states, 33590 states have (on average 1.4435546293539745) internal successors, (48489), 34545 states have internal predecessors, (48489), 11713 states have call successors, (11713), 3256 states have call predecessors, (11713), 3255 states have return successors, (11949), 11405 states have call predecessors, (11949), 11711 states have call successors, (11949) [2022-11-03 02:18:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48559 states to 48559 states and 72151 transitions. [2022-11-03 02:18:35,738 INFO L78 Accepts]: Start accepts. Automaton has 48559 states and 72151 transitions. Word has length 1008 [2022-11-03 02:18:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:35,740 INFO L495 AbstractCegarLoop]: Abstraction has 48559 states and 72151 transitions. [2022-11-03 02:18:35,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-03 02:18:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 48559 states and 72151 transitions. [2022-11-03 02:18:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2022-11-03 02:18:35,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:35,788 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:35,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:36,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:36,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash 389042547, now seen corresponding path program 1 times [2022-11-03 02:18:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:36,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845323116] [2022-11-03 02:18:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:36,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30633 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30615 trivial. 0 not checked. [2022-11-03 02:18:39,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:39,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845323116] [2022-11-03 02:18:39,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845323116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:39,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:39,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645092416] [2022-11-03 02:18:39,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:39,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:39,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:39,197 INFO L87 Difference]: Start difference. First operand 48559 states and 72151 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-03 02:18:41,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:48,734 WARN L539 Checker$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 02:18:50,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:53,028 WARN L539 Checker$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 02:18:58,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:01,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:02,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:05,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:05,934 INFO L93 Difference]: Finished difference Result 97053 states and 144191 transitions. [2022-11-03 02:19:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:19:05,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1229 [2022-11-03 02:19:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:06,245 INFO L225 Difference]: With dead ends: 97053 [2022-11-03 02:19:06,245 INFO L226 Difference]: Without dead ends: 48559 [2022-11-03 02:19:06,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:06,426 INFO L413 NwaCegarLoop]: 3745 mSDtfsCounter, 3 mSDsluCounter, 8224 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11224 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:06,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11224 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1129 Invalid, 6 Unknown, 0 Unchecked, 25.0s Time] [2022-11-03 02:19:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48559 states. [2022-11-03 02:19:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48559 to 48559. [2022-11-03 02:19:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48559 states, 33590 states have (on average 1.436885977969634) internal successors, (48265), 34545 states have internal predecessors, (48265), 11713 states have call successors, (11713), 3256 states have call predecessors, (11713), 3255 states have return successors, (11949), 11405 states have call predecessors, (11949), 11711 states have call successors, (11949) [2022-11-03 02:19:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48559 states to 48559 states and 71927 transitions. [2022-11-03 02:19:09,012 INFO L78 Accepts]: Start accepts. Automaton has 48559 states and 71927 transitions. Word has length 1229 [2022-11-03 02:19:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:09,013 INFO L495 AbstractCegarLoop]: Abstraction has 48559 states and 71927 transitions. [2022-11-03 02:19:09,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-03 02:19:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 48559 states and 71927 transitions. [2022-11-03 02:19:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2022-11-03 02:19:09,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:09,060 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:09,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:19:09,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash -311002815, now seen corresponding path program 1 times [2022-11-03 02:19:09,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:09,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827827603] [2022-11-03 02:19:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:09,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:19:09,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328071956] [2022-11-03 02:19:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:09,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:09,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:19:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:14,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 16478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:19:14,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 29851 trivial. 0 not checked. [2022-11-03 02:19:14,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:14,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:14,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827827603] [2022-11-03 02:19:14,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:19:14,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328071956] [2022-11-03 02:19:14,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328071956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:14,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:14,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:14,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008407167] [2022-11-03 02:19:14,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:14,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:14,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:14,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:14,556 INFO L87 Difference]: Start difference. First operand 48559 states and 71927 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2022-11-03 02:19:16,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:22,656 WARN L539 Checker$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 02:19:24,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:27,350 WARN L539 Checker$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 02:19:33,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:36,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:39,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:40,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:41,822 INFO L93 Difference]: Finished difference Result 133544 states and 198229 transitions. [2022-11-03 02:19:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) Word has length 1251 [2022-11-03 02:19:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:42,218 INFO L225 Difference]: With dead ends: 133544 [2022-11-03 02:19:42,218 INFO L226 Difference]: Without dead ends: 85146 [2022-11-03 02:19:42,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1249 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 02:19:42,423 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 3681 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 46 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3687 SdHoareTripleChecker+Valid, 7988 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:42,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3687 Valid, 7988 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 850 Invalid, 7 Unknown, 0 Unchecked, 24.5s Time] [2022-11-03 02:19:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85146 states. [2022-11-03 02:19:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85146 to 85137. [2022-11-03 02:19:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85137 states, 58460 states have (on average 1.4309100239479986) internal successors, (83651), 60101 states have internal predecessors, (83651), 21121 states have call successors, (21121), 5548 states have call predecessors, (21121), 5555 states have return successors, (21537), 20579 states have call predecessors, (21537), 21119 states have call successors, (21537) [2022-11-03 02:19:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85137 states to 85137 states and 126309 transitions. [2022-11-03 02:19:46,187 INFO L78 Accepts]: Start accepts. Automaton has 85137 states and 126309 transitions. Word has length 1251 [2022-11-03 02:19:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:46,189 INFO L495 AbstractCegarLoop]: Abstraction has 85137 states and 126309 transitions. [2022-11-03 02:19:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2022-11-03 02:19:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 85137 states and 126309 transitions. [2022-11-03 02:19:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2022-11-03 02:19:46,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:46,256 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:46,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:46,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:19:46,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 66882066, now seen corresponding path program 1 times [2022-11-03 02:19:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:46,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585509747] [2022-11-03 02:19:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:47,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:19:47,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509111545] [2022-11-03 02:19:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:47,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:47,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:19:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:51,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 16477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:19:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11050 proven. 0 refuted. 0 times theorem prover too weak. 19595 trivial. 0 not checked. [2022-11-03 02:19:51,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:51,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:51,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585509747] [2022-11-03 02:19:51,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:19:51,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509111545] [2022-11-03 02:19:51,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509111545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:51,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:51,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583356183] [2022-11-03 02:19:51,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:51,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:51,655 INFO L87 Difference]: Start difference. First operand 85137 states and 126309 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-03 02:19:53,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:02,028 WARN L539 Checker$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 02:20:04,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:06,179 WARN L539 Checker$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 02:20:12,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:15,208 WARN L539 Checker$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 02:20:17,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:18,227 INFO L93 Difference]: Finished difference Result 170185 states and 252475 transitions. [2022-11-03 02:20:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:20:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1250 [2022-11-03 02:20:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:18,558 INFO L225 Difference]: With dead ends: 170185 [2022-11-03 02:20:18,558 INFO L226 Difference]: Without dead ends: 85137 [2022-11-03 02:20:18,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:18,741 INFO L413 NwaCegarLoop]: 3738 mSDtfsCounter, 3 mSDsluCounter, 8215 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11210 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:18,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11210 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1125 Invalid, 7 Unknown, 0 Unchecked, 23.6s Time] [2022-11-03 02:20:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85137 states. [2022-11-03 02:20:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85137 to 85137. [2022-11-03 02:20:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85137 states, 58460 states have (on average 1.4304994868286007) internal successors, (83627), 60101 states have internal predecessors, (83627), 21121 states have call successors, (21121), 5548 states have call predecessors, (21121), 5555 states have return successors, (21537), 20579 states have call predecessors, (21537), 21119 states have call successors, (21537) [2022-11-03 02:20:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85137 states to 85137 states and 126285 transitions. [2022-11-03 02:20:22,222 INFO L78 Accepts]: Start accepts. Automaton has 85137 states and 126285 transitions. Word has length 1250 [2022-11-03 02:20:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:22,223 INFO L495 AbstractCegarLoop]: Abstraction has 85137 states and 126285 transitions. [2022-11-03 02:20:22,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-03 02:20:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 85137 states and 126285 transitions. [2022-11-03 02:20:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2022-11-03 02:20:22,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:22,264 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:22,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:22,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:20:22,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1669936096, now seen corresponding path program 1 times [2022-11-03 02:20:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:22,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012684773] [2022-11-03 02:20:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:23,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:20:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11444699] [2022-11-03 02:20:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:23,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:23,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:23,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:23,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:20:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:27,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 16496 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:20:27,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11038 proven. 0 refuted. 0 times theorem prover too weak. 19607 trivial. 0 not checked. [2022-11-03 02:20:33,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:33,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:33,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012684773] [2022-11-03 02:20:33,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:20:33,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11444699] [2022-11-03 02:20:33,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11444699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:33,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:33,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:20:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026980131] [2022-11-03 02:20:33,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:33,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:33,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:33,132 INFO L87 Difference]: Start difference. First operand 85137 states and 126285 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-03 02:20:35,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:42,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:44,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:46,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:52,922 WARN L539 Checker$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 02:20:56,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:57,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:59,548 INFO L93 Difference]: Finished difference Result 253005 states and 375664 transitions. [2022-11-03 02:20:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 1257 [2022-11-03 02:20:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:00,343 INFO L225 Difference]: With dead ends: 253005 [2022-11-03 02:21:00,343 INFO L226 Difference]: Without dead ends: 168029 [2022-11-03 02:21:00,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1255 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 02:21:00,862 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 3778 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 7954 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:00,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3784 Valid, 7954 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 760 Invalid, 6 Unknown, 0 Unchecked, 21.1s Time] [2022-11-03 02:21:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168029 states. [2022-11-03 02:21:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168029 to 167984. [2022-11-03 02:21:07,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167984 states, 115615 states have (on average 1.431994118410241) internal successors, (165560), 118717 states have internal predecessors, (165560), 41425 states have call successors, (41425), 10928 states have call predecessors, (41425), 10943 states have return successors, (42237), 40422 states have call predecessors, (42237), 41423 states have call successors, (42237) [2022-11-03 02:21:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167984 states to 167984 states and 249222 transitions. [2022-11-03 02:21:07,683 INFO L78 Accepts]: Start accepts. Automaton has 167984 states and 249222 transitions. Word has length 1257 [2022-11-03 02:21:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:07,684 INFO L495 AbstractCegarLoop]: Abstraction has 167984 states and 249222 transitions. [2022-11-03 02:21:07,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-03 02:21:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 167984 states and 249222 transitions. [2022-11-03 02:21:08,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2022-11-03 02:21:08,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:08,182 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:08,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:08,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:08,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1307228340, now seen corresponding path program 1 times [2022-11-03 02:21:08,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:08,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431620230] [2022-11-03 02:21:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:08,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:09,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:21:09,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541695605] [2022-11-03 02:21:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:09,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:09,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7393-7c4c-416c-a307-29b65b233c35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process