./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8 --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 aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:21,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:21,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:21,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:21,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:21,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:21,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:21,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:21,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:21,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:21,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:21,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:21,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:21,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:21,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:21,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:21,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:21,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:21,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:21,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:21,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:21,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:21,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:21,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:21,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:21,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:21,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:21,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:21,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:21,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:21,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:21,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:21,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:21,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:21,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:21,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:21,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:21,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:21,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:21,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:21,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:21,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:01:21,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:21,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:21,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:21,373 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:21,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:21,374 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:21,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:01:21,374 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:21,374 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:21,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:01:21,375 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:01:21,375 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:21,375 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:01:21,375 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:01:21,376 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:01:21,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:21,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:01:21,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:21,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:21,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:21,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:21,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:21,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:21,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:21,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:21,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:21,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:21,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:21,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:21,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:21,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:21,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:01:21,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:01:21,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:21,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:21,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:21,380 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b [2021-11-07 02:01:21,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:21,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:21,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:21,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:21,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:21,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-07 02:01:21,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/6b3b8f856/413d3b71a9734c6780fa4c43c2d7d30f/FLAGf498d8791 [2021-11-07 02:01:22,781 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:22,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-07 02:01:22,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/6b3b8f856/413d3b71a9734c6780fa4c43c2d7d30f/FLAGf498d8791 [2021-11-07 02:01:23,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/6b3b8f856/413d3b71a9734c6780fa4c43c2d7d30f [2021-11-07 02:01:23,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:23,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:23,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:23,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:23,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:23,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:23" (1/1) ... [2021-11-07 02:01:23,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4c3360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:23, skipping insertion in model container [2021-11-07 02:01:23,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:23" (1/1) ... [2021-11-07 02:01:23,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:23,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:24,167 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-11-07 02:01:24,169 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-11-07 02:01:24,690 WARN L228 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_2c640055-e0f7-43f3-8b4e-602935c8eca4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-11-07 02:01:24,732 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,066 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,529 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,587 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,594 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,600 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,610 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,622 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,655 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,673 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,697 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,711 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,716 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,736 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,746 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,753 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,759 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,770 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,779 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,813 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,817 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,826 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,849 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,865 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,875 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,876 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,927 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,948 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,961 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:25,979 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,001 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,002 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,011 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,019 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,046 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,047 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,075 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,123 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,124 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,124 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,124 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,130 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,131 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,131 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,131 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,132 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,132 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,133 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:26,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:26,253 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:01:26,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61cdc1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:26, skipping insertion in model container [2021-11-07 02:01:26,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:26,254 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:01:26,257 INFO L168 Benchmark]: Toolchain (without parser) took 3102.99 ms. Allocated memory was 140.5 MB in the beginning and 180.4 MB in the end (delta: 39.8 MB). Free memory was 86.3 MB in the beginning and 86.8 MB in the end (delta: -522.1 kB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:26,257 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory is still 117.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:01:26,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3099.92 ms. Allocated memory was 140.5 MB in the beginning and 180.4 MB in the end (delta: 39.8 MB). Free memory was 86.2 MB in the beginning and 86.8 MB in the end (delta: -648.5 kB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:26,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory is still 117.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3099.92 ms. Allocated memory was 140.5 MB in the beginning and 180.4 MB in the end (delta: 39.8 MB). Free memory was 86.2 MB in the beginning and 86.8 MB in the end (delta: -648.5 kB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6213]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8 --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 aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:28,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:28,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:28,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:28,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:28,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:28,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:28,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:28,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:28,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:28,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:28,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:28,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:28,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:28,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:28,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:28,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:28,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:28,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:28,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:28,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:28,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:28,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:28,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:28,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:28,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:28,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:28,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:28,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:28,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:28,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:28,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:28,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:28,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:28,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:28,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:28,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:28,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:28,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:28,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:28,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:28,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:01:28,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:28,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:28,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:28,797 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:28,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:28,798 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:28,798 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:28,798 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:28,799 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:28,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:28,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:28,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:28,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:28,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:28,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:28,801 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:01:28,801 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:01:28,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:28,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:28,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:28,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:28,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:01:28,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:28,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:28,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:28,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:28,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:28,805 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:01:28,805 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:28,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:28,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:28,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:28,806 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b [2021-11-07 02:01:29,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:29,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:29,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:29,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:29,291 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:29,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-07 02:01:29,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/99ce78499/116347462f4e4a058cbd53814ef18a96/FLAGeaf96ab8a [2021-11-07 02:01:30,398 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:30,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-07 02:01:30,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/99ce78499/116347462f4e4a058cbd53814ef18a96/FLAGeaf96ab8a [2021-11-07 02:01:30,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/data/99ce78499/116347462f4e4a058cbd53814ef18a96 [2021-11-07 02:01:30,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:30,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:30,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:30,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:30,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:30,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:30" (1/1) ... [2021-11-07 02:01:30,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310b86dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:30, skipping insertion in model container [2021-11-07 02:01:30,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:30" (1/1) ... [2021-11-07 02:01:30,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:31,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:31,781 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-11-07 02:01:31,782 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-11-07 02:01:32,315 WARN L228 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_2c640055-e0f7-43f3-8b4e-602935c8eca4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-11-07 02:01:33,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:33,948 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:01:34,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:34,216 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-11-07 02:01:34,217 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-11-07 02:01:34,234 WARN L228 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_2c640055-e0f7-43f3-8b4e-602935c8eca4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-11-07 02:01:34,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:34,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:01:34,738 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-11-07 02:01:34,739 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-11-07 02:01:34,751 WARN L228 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_2c640055-e0f7-43f3-8b4e-602935c8eca4/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-11-07 02:01:35,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:35,521 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:01:35,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35 WrapperNode [2021-11-07 02:01:35,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:35,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:35,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:01:35,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:01:35,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:35,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:36,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:01:36,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:01:36,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:01:36,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:01:36,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:01:36,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:01:36,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:01:36,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (1/1) ... [2021-11-07 02:01:36,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:36,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:37,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:01:37,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:01:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:01:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 02:01:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 02:01:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:01:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 02:01:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:01:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:01:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:01:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:01:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure hso_kick_transmit [2021-11-07 02:01:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_kick_transmit [2021-11-07 02:01:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:01:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:01:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:01:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 02:01:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:01:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:01:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:01:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:01:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:01:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:01:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:01:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:01:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:01:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:01:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure hso_resume [2021-11-07 02:01:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_resume [2021-11-07 02:01:37,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:01:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:01:37,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:01:37,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:01:37,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 02:01:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_interface [2021-11-07 02:01:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_interface [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:01:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure hso_disconnect [2021-11-07 02:01:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_disconnect [2021-11-07 02:01:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:01:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:01:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:01:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:01:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:01:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:01:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:01:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:04:47,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:04:47,599 INFO L299 CfgBuilder]: Removed 3032 assume(true) statements. [2021-11-07 02:04:47,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:47 BoogieIcfgContainer [2021-11-07 02:04:47,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:04:47,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:04:47,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:04:47,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:04:47,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:01:30" (1/3) ... [2021-11-07 02:04:47,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169855d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:47, skipping insertion in model container [2021-11-07 02:04:47,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:35" (2/3) ... [2021-11-07 02:04:47,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169855d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:04:47, skipping insertion in model container [2021-11-07 02:04:47,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:04:47" (3/3) ... [2021-11-07 02:04:47,615 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-11-07 02:04:47,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:04:47,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-07 02:04:47,691 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:04:47,697 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:04:47,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-07 02:04:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 3210 states, 3127 states have (on average 1.4505916213623282) internal successors, (4536), 3185 states have internal predecessors, (4536), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 02:04:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 02:04:47,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:47,788 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:47,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:04:47,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash 746580595, now seen corresponding path program 1 times [2021-11-07 02:04:47,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:47,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821531583] [2021-11-07 02:04:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:47,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:47,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:47,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:04:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:54,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:04:54,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:55,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:55,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821531583] [2021-11-07 02:04:55,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821531583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:55,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:55,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:04:55,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107690231] [2021-11-07 02:04:55,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:04:55,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:04:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:04:55,511 INFO L87 Difference]: Start difference. First operand has 3210 states, 3127 states have (on average 1.4505916213623282) internal successors, (4536), 3185 states have internal predecessors, (4536), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:56,194 INFO L93 Difference]: Finished difference Result 6420 states and 9165 transitions. [2021-11-07 02:04:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:04:56,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 02:04:56,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:56,236 INFO L225 Difference]: With dead ends: 6420 [2021-11-07 02:04:56,237 INFO L226 Difference]: Without dead ends: 3198 [2021-11-07 02:04:56,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:04:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-07 02:04:56,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3198. [2021-11-07 02:04:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 3116 states have (on average 1.404364569961489) internal successors, (4376), 3173 states have internal predecessors, (4376), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 02:04:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4412 transitions. [2021-11-07 02:04:56,467 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4412 transitions. Word has length 39 [2021-11-07 02:04:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:56,468 INFO L470 AbstractCegarLoop]: Abstraction has 3198 states and 4412 transitions. [2021-11-07 02:04:56,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4412 transitions. [2021-11-07 02:04:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:04:56,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:56,471 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:56,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:56,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:56,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:04:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash 850246577, now seen corresponding path program 1 times [2021-11-07 02:04:56,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:56,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119559305] [2021-11-07 02:04:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:56,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:56,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:56,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:56,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:05:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:03,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:05:03,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:05:04,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:05:05,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:05,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119559305] [2021-11-07 02:05:05,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119559305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:05,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [303237486] [2021-11-07 02:05:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:05,255 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:05,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:05,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:05,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 02:05:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:08,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:08,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:08,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:08,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [303237486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:08,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:08,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:08,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076727566] [2021-11-07 02:05:08,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:08,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:08,819 INFO L87 Difference]: Start difference. First operand 3198 states and 4412 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:10,097 INFO L93 Difference]: Finished difference Result 8453 states and 11791 transitions. [2021-11-07 02:05:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:10,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 02:05:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:10,138 INFO L225 Difference]: With dead ends: 8453 [2021-11-07 02:05:10,139 INFO L226 Difference]: Without dead ends: 5355 [2021-11-07 02:05:10,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2021-11-07 02:05:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 5306. [2021-11-07 02:05:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5203 states have (on average 1.4228329809725158) internal successors, (7403), 5262 states have internal predecessors, (7403), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-07 02:05:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 7465 transitions. [2021-11-07 02:05:10,352 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 7465 transitions. Word has length 42 [2021-11-07 02:05:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:10,353 INFO L470 AbstractCegarLoop]: Abstraction has 5306 states and 7465 transitions. [2021-11-07 02:05:10,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 7465 transitions. [2021-11-07 02:05:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:05:10,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:10,359 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:10,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:10,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:10,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:10,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:05:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash -452705625, now seen corresponding path program 1 times [2021-11-07 02:05:10,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:10,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547400946] [2021-11-07 02:05:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:10,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:10,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:05:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:17,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:05:17,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:05:18,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:05:19,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:19,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547400946] [2021-11-07 02:05:19,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547400946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:19,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134968990] [2021-11-07 02:05:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:19,667 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:19,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:19,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:19,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 02:05:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:22,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:23,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:23,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [134968990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:23,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:23,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:23,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376380888] [2021-11-07 02:05:23,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:23,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:23,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:23,392 INFO L87 Difference]: Start difference. First operand 5306 states and 7465 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:24,577 INFO L93 Difference]: Finished difference Result 15258 states and 21578 transitions. [2021-11-07 02:05:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 02:05:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:24,644 INFO L225 Difference]: With dead ends: 15258 [2021-11-07 02:05:24,645 INFO L226 Difference]: Without dead ends: 10052 [2021-11-07 02:05:24,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10052 states. [2021-11-07 02:05:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10052 to 9954. [2021-11-07 02:05:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9954 states, 9804 states have (on average 1.430844553243574) internal successors, (14028), 9867 states have internal predecessors, (14028), 62 states have call successors, (62), 32 states have call predecessors, (62), 32 states have return successors, (79), 58 states have call predecessors, (79), 62 states have call successors, (79) [2021-11-07 02:05:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 14169 transitions. [2021-11-07 02:05:25,079 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 14169 transitions. Word has length 51 [2021-11-07 02:05:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:25,083 INFO L470 AbstractCegarLoop]: Abstraction has 9954 states and 14169 transitions. [2021-11-07 02:05:25,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 14169 transitions. [2021-11-07 02:05:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 02:05:25,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:25,088 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:25,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:25,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:25,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:25,507 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:05:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash 742120390, now seen corresponding path program 1 times [2021-11-07 02:05:25,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:25,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134498036] [2021-11-07 02:05:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:25,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:25,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:25,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:25,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:05:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:32,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:05:32,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:05:33,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:05:35,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:35,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134498036] [2021-11-07 02:05:35,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134498036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:35,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017839103] [2021-11-07 02:05:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:35,343 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:35,344 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:35,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 02:05:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:38,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:38,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:39,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:40,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2017839103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:40,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:40,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:40,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694091078] [2021-11-07 02:05:40,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:40,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:40,075 INFO L87 Difference]: Start difference. First operand 9954 states and 14169 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:42,042 INFO L93 Difference]: Finished difference Result 24574 states and 34877 transitions. [2021-11-07 02:05:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 02:05:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:42,171 INFO L225 Difference]: With dead ends: 24574 [2021-11-07 02:05:42,171 INFO L226 Difference]: Without dead ends: 14720 [2021-11-07 02:05:42,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14720 states. [2021-11-07 02:05:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14720 to 14614. [2021-11-07 02:05:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14614 states, 14418 states have (on average 1.425579137189624) internal successors, (20554), 14485 states have internal predecessors, (20554), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 86 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-07 02:05:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14614 states to 14614 states and 20763 transitions. [2021-11-07 02:05:42,855 INFO L78 Accepts]: Start accepts. Automaton has 14614 states and 20763 transitions. Word has length 71 [2021-11-07 02:05:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:42,857 INFO L470 AbstractCegarLoop]: Abstraction has 14614 states and 20763 transitions. [2021-11-07 02:05:42,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 14614 states and 20763 transitions. [2021-11-07 02:05:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 02:05:42,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:42,862 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:05:42,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:43,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:43,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:43,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:05:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash 769915298, now seen corresponding path program 1 times [2021-11-07 02:05:43,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:43,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672578943] [2021-11-07 02:05:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:43,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:43,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:43,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:05:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:51,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 3315 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:05:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:05:52,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:05:54,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:54,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672578943] [2021-11-07 02:05:54,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672578943] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:54,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895352494] [2021-11-07 02:05:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:54,291 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:54,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:54,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:54,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:05:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:58,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 3315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:58,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:05:59,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:06:01,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [895352494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:01,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:01,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:01,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166585020] [2021-11-07 02:06:01,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:01,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:01,023 INFO L87 Difference]: Start difference. First operand 14614 states and 20763 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:01,535 INFO L93 Difference]: Finished difference Result 29128 states and 41414 transitions. [2021-11-07 02:06:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:01,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 02:06:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:01,609 INFO L225 Difference]: With dead ends: 29128 [2021-11-07 02:06:01,609 INFO L226 Difference]: Without dead ends: 14614 [2021-11-07 02:06:01,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14614 states. [2021-11-07 02:06:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 14614. [2021-11-07 02:06:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14614 states, 14418 states have (on average 1.4250242752115412) internal successors, (20546), 14485 states have internal predecessors, (20546), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 86 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-07 02:06:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14614 states to 14614 states and 20755 transitions. [2021-11-07 02:06:02,320 INFO L78 Accepts]: Start accepts. Automaton has 14614 states and 20755 transitions. Word has length 77 [2021-11-07 02:06:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:02,325 INFO L470 AbstractCegarLoop]: Abstraction has 14614 states and 20755 transitions. [2021-11-07 02:06:02,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14614 states and 20755 transitions. [2021-11-07 02:06:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 02:06:02,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:02,328 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:06:02,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:02,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:02,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:02,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:06:02,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1601823964, now seen corresponding path program 1 times [2021-11-07 02:06:02,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:02,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551912388] [2021-11-07 02:06:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:02,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:02,763 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:02,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:06:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:11,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:11,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:06:12,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:06:13,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:13,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551912388] [2021-11-07 02:06:13,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551912388] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:06:13,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1266441546] [2021-11-07 02:06:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:13,857 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:06:13,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:06:13,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:06:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:17,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:17,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:06:18,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:06:18,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1266441546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:18,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:18,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:18,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601888507] [2021-11-07 02:06:18,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:18,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:18,524 INFO L87 Difference]: Start difference. First operand 14614 states and 20755 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:21,629 INFO L93 Difference]: Finished difference Result 29132 states and 41402 transitions. [2021-11-07 02:06:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 02:06:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:21,684 INFO L225 Difference]: With dead ends: 29132 [2021-11-07 02:06:21,684 INFO L226 Difference]: Without dead ends: 14610 [2021-11-07 02:06:21,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14610 states. [2021-11-07 02:06:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14610 to 14468. [2021-11-07 02:06:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14468 states, 14272 states have (on average 1.4271300448430493) internal successors, (20368), 14339 states have internal predecessors, (20368), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (117), 86 states have call predecessors, (117), 92 states have call successors, (117) [2021-11-07 02:06:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14468 states to 14468 states and 20577 transitions. [2021-11-07 02:06:22,337 INFO L78 Accepts]: Start accepts. Automaton has 14468 states and 20577 transitions. Word has length 77 [2021-11-07 02:06:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:22,338 INFO L470 AbstractCegarLoop]: Abstraction has 14468 states and 20577 transitions. [2021-11-07 02:06:22,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14468 states and 20577 transitions. [2021-11-07 02:06:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 02:06:22,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:22,344 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:06:22,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:22,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:22,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:22,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:06:22,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -793341334, now seen corresponding path program 1 times [2021-11-07 02:06:22,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:22,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078622628] [2021-11-07 02:06:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:22,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:22,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:22,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:06:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:31,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:31,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:06:32,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:06:34,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:34,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078622628] [2021-11-07 02:06:34,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078622628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:06:34,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820278514] [2021-11-07 02:06:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:34,396 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:34,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:06:34,397 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:06:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:06:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:38,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:06:40,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:06:42,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1820278514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:42,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:42,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:42,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895108541] [2021-11-07 02:06:42,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:42,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:42,114 INFO L87 Difference]: Start difference. First operand 14468 states and 20577 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:44,338 INFO L93 Difference]: Finished difference Result 15304 states and 21696 transitions. [2021-11-07 02:06:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:44,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 02:06:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:44,391 INFO L225 Difference]: With dead ends: 15304 [2021-11-07 02:06:44,391 INFO L226 Difference]: Without dead ends: 15212 [2021-11-07 02:06:44,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15212 states. [2021-11-07 02:06:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15212 to 15080. [2021-11-07 02:06:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15080 states, 14921 states have (on average 1.4144494336840694) internal successors, (21105), 14947 states have internal predecessors, (21105), 92 states have call successors, (92), 52 states have call predecessors, (92), 52 states have return successors, (121), 86 states have call predecessors, (121), 92 states have call successors, (121) [2021-11-07 02:06:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15080 states to 15080 states and 21318 transitions. [2021-11-07 02:06:44,995 INFO L78 Accepts]: Start accepts. Automaton has 15080 states and 21318 transitions. Word has length 82 [2021-11-07 02:06:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:44,997 INFO L470 AbstractCegarLoop]: Abstraction has 15080 states and 21318 transitions. [2021-11-07 02:06:44,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 15080 states and 21318 transitions. [2021-11-07 02:06:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 02:06:45,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:45,012 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:06:45,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:45,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:45,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:45,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:06:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:45,440 INFO L85 PathProgramCache]: Analyzing trace with hash -954596062, now seen corresponding path program 1 times [2021-11-07 02:06:45,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:45,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292197119] [2021-11-07 02:06:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:45,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:45,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:45,452 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:45,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:06:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:54,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3343 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:54,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:06:55,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:06:57,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292197119] [2021-11-07 02:06:57,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292197119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:06:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1918299319] [2021-11-07 02:06:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:57,210 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:57,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:06:57,212 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:06:57,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 02:07:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:01,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:07:01,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:07:02,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:07:03,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1918299319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:03,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:07:03,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 02:07:03,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181330099] [2021-11-07 02:07:03,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:07:03,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:07:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:07:03,556 INFO L87 Difference]: Start difference. First operand 15080 states and 21318 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:08,956 INFO L93 Difference]: Finished difference Result 30068 states and 42532 transitions. [2021-11-07 02:07:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-07 02:07:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:09,001 INFO L225 Difference]: With dead ends: 30068 [2021-11-07 02:07:09,001 INFO L226 Difference]: Without dead ends: 15080 [2021-11-07 02:07:09,031 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:07:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15080 states. [2021-11-07 02:07:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15080 to 15080. [2021-11-07 02:07:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15080 states, 14921 states have (on average 1.4141813551370552) internal successors, (21101), 14947 states have internal predecessors, (21101), 92 states have call successors, (92), 52 states have call predecessors, (92), 52 states have return successors, (121), 86 states have call predecessors, (121), 92 states have call successors, (121) [2021-11-07 02:07:09,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15080 states to 15080 states and 21314 transitions. [2021-11-07 02:07:09,545 INFO L78 Accepts]: Start accepts. Automaton has 15080 states and 21314 transitions. Word has length 99 [2021-11-07 02:07:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:09,546 INFO L470 AbstractCegarLoop]: Abstraction has 15080 states and 21314 transitions. [2021-11-07 02:07:09,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:09,546 INFO L276 IsEmpty]: Start isEmpty. Operand 15080 states and 21314 transitions. [2021-11-07 02:07:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:07:09,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:09,556 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:07:09,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:09,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:09,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:09,979 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:07:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 858481463, now seen corresponding path program 1 times [2021-11-07 02:07:09,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:09,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715319691] [2021-11-07 02:07:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:09,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:09,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:10,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:07:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:18,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:07:18,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:07:19,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:07:21,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:21,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715319691] [2021-11-07 02:07:21,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715319691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:07:21,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1198132815] [2021-11-07 02:07:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:21,363 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:07:21,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:07:21,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 02:07:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:25,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:25,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:07:26,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:07:27,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1198132815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:27,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:07:27,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 02:07:27,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397359549] [2021-11-07 02:07:27,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:07:27,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:07:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:07:27,425 INFO L87 Difference]: Start difference. First operand 15080 states and 21314 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:30,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:30,748 INFO L93 Difference]: Finished difference Result 30024 states and 42476 transitions. [2021-11-07 02:07:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:07:30,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 02:07:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:30,795 INFO L225 Difference]: With dead ends: 30024 [2021-11-07 02:07:30,796 INFO L226 Difference]: Without dead ends: 15024 [2021-11-07 02:07:30,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:07:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15024 states. [2021-11-07 02:07:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15024 to 14976. [2021-11-07 02:07:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14976 states, 14817 states have (on average 1.416008638725788) internal successors, (20981), 14843 states have internal predecessors, (20981), 92 states have call successors, (92), 52 states have call predecessors, (92), 52 states have return successors, (121), 86 states have call predecessors, (121), 92 states have call successors, (121) [2021-11-07 02:07:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14976 states to 14976 states and 21194 transitions. [2021-11-07 02:07:31,520 INFO L78 Accepts]: Start accepts. Automaton has 14976 states and 21194 transitions. Word has length 107 [2021-11-07 02:07:31,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:31,521 INFO L470 AbstractCegarLoop]: Abstraction has 14976 states and 21194 transitions. [2021-11-07 02:07:31,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14976 states and 21194 transitions. [2021-11-07 02:07:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 02:07:31,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:31,532 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:07:31,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:31,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:31,955 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:07:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2138229677, now seen corresponding path program 1 times [2021-11-07 02:07:31,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:31,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727352917] [2021-11-07 02:07:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:31,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:31,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:31,968 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:31,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:07:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:40,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:07:40,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:07:41,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:07:43,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:43,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727352917] [2021-11-07 02:07:43,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727352917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:07:43,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1982454806] [2021-11-07 02:07:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:43,455 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:07:43,457 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:07:43,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 02:07:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:47,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:07:48,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:07:49,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1982454806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:49,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:07:49,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:07:49,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227839069] [2021-11-07 02:07:49,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:49,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:07:49,317 INFO L87 Difference]: Start difference. First operand 14976 states and 21194 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:54,729 INFO L93 Difference]: Finished difference Result 42556 states and 60231 transitions. [2021-11-07 02:07:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-07 02:07:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:54,807 INFO L225 Difference]: With dead ends: 42556 [2021-11-07 02:07:54,808 INFO L226 Difference]: Without dead ends: 27680 [2021-11-07 02:07:54,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:07:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27680 states. [2021-11-07 02:07:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27680 to 27464. [2021-11-07 02:07:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27464 states, 27173 states have (on average 1.4142347182865345) internal successors, (38429), 27211 states have internal predecessors, (38429), 172 states have call successors, (172), 104 states have call predecessors, (172), 104 states have return successors, (226), 160 states have call predecessors, (226), 172 states have call successors, (226) [2021-11-07 02:07:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27464 states to 27464 states and 38827 transitions. [2021-11-07 02:07:55,808 INFO L78 Accepts]: Start accepts. Automaton has 27464 states and 38827 transitions. Word has length 111 [2021-11-07 02:07:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:55,809 INFO L470 AbstractCegarLoop]: Abstraction has 27464 states and 38827 transitions. [2021-11-07 02:07:55,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 27464 states and 38827 transitions. [2021-11-07 02:07:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 02:07:55,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:55,817 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:07:55,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-07 02:07:56,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:56,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:56,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:07:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash 457121834, now seen corresponding path program 1 times [2021-11-07 02:07:56,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:56,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916615149] [2021-11-07 02:07:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:56,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:56,244 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:56,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 02:08:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:05,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:05,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:08:06,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:08:08,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:08,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916615149] [2021-11-07 02:08:08,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916615149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:08,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1429543137] [2021-11-07 02:08:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:08,446 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:08,454 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:08,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 02:08:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:12,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:12,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:13,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:14,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1429543137] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:14,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:14,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:08:14,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285770369] [2021-11-07 02:08:14,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:14,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:14,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:08:14,917 INFO L87 Difference]: Start difference. First operand 27464 states and 38827 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:19,658 INFO L93 Difference]: Finished difference Result 81804 states and 116404 transitions. [2021-11-07 02:08:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:19,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 02:08:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:19,809 INFO L225 Difference]: With dead ends: 81804 [2021-11-07 02:08:19,809 INFO L226 Difference]: Without dead ends: 54440 [2021-11-07 02:08:19,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:08:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54440 states. [2021-11-07 02:08:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54440 to 54232. [2021-11-07 02:08:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54232 states, 53641 states have (on average 1.4286273559404188) internal successors, (76633), 53711 states have internal predecessors, (76633), 344 states have call successors, (344), 232 states have call predecessors, (344), 232 states have return successors, (442), 316 states have call predecessors, (442), 344 states have call successors, (442) [2021-11-07 02:08:21,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54232 states to 54232 states and 77419 transitions. [2021-11-07 02:08:21,799 INFO L78 Accepts]: Start accepts. Automaton has 54232 states and 77419 transitions. Word has length 115 [2021-11-07 02:08:21,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:21,799 INFO L470 AbstractCegarLoop]: Abstraction has 54232 states and 77419 transitions. [2021-11-07 02:08:21,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 54232 states and 77419 transitions. [2021-11-07 02:08:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 02:08:21,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:21,822 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:08:21,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:22,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-07 02:08:22,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:22,247 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr5ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:08:22,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:22,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1877723888, now seen corresponding path program 1 times [2021-11-07 02:08:22,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:22,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222388652] [2021-11-07 02:08:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:22,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:22,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:22,255 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:22,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 02:08:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:30,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:30,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:08:32,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:08:34,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:34,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222388652] [2021-11-07 02:08:34,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222388652] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:34,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122820014] [2021-11-07 02:08:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:34,882 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:34,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:34,883 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:34,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 02:08:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:39,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:08:39,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:08:41,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:08:43,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1122820014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:43,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:43,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 02:08:43,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210697092] [2021-11-07 02:08:43,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:08:43,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:08:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:08:43,334 INFO L87 Difference]: Start difference. First operand 54232 states and 77419 transitions. Second operand has 12 states, 10 states have (on average 15.1) internal successors, (151), 8 states have internal predecessors, (151), 5 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:46,870 INFO L93 Difference]: Finished difference Result 80228 states and 114010 transitions. [2021-11-07 02:08:46,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:08:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 15.1) internal successors, (151), 8 states have internal predecessors, (151), 5 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-07 02:08:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:46,963 INFO L225 Difference]: With dead ends: 80228 [2021-11-07 02:08:46,963 INFO L226 Difference]: Without dead ends: 26096 [2021-11-07 02:08:47,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:08:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26096 states. [2021-11-07 02:08:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26096 to 26096. [2021-11-07 02:08:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26096 states, 25713 states have (on average 1.3863415392991871) internal successors, (35647), 25719 states have internal predecessors, (35647), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:08:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26096 states to 26096 states and 36079 transitions. [2021-11-07 02:08:48,648 INFO L78 Accepts]: Start accepts. Automaton has 26096 states and 36079 transitions. Word has length 137 [2021-11-07 02:08:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:48,649 INFO L470 AbstractCegarLoop]: Abstraction has 26096 states and 36079 transitions. [2021-11-07 02:08:48,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 15.1) internal successors, (151), 8 states have internal predecessors, (151), 5 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26096 states and 36079 transitions. [2021-11-07 02:08:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 02:08:48,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:48,669 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:48,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:48,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-07 02:08:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:49,082 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:08:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1132047809, now seen corresponding path program 1 times [2021-11-07 02:08:49,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:49,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105726437] [2021-11-07 02:08:49,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:49,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:49,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:49,091 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:49,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 02:08:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:58,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 3593 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:58,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:00,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:02,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:02,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105726437] [2021-11-07 02:09:02,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105726437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:02,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1221008482] [2021-11-07 02:09:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:02,120 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:02,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:02,135 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:02,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 02:09:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:06,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 3593 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:06,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:09:07,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:09:09,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1221008482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:09,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:09,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 02:09:09,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841737888] [2021-11-07 02:09:09,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:09,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:09:09,017 INFO L87 Difference]: Start difference. First operand 26096 states and 36079 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:14,168 INFO L93 Difference]: Finished difference Result 72676 states and 99736 transitions. [2021-11-07 02:09:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:09:14,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 02:09:14,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:14,311 INFO L225 Difference]: With dead ends: 72676 [2021-11-07 02:09:14,311 INFO L226 Difference]: Without dead ends: 46680 [2021-11-07 02:09:14,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:09:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46680 states. [2021-11-07 02:09:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46680 to 26112. [2021-11-07 02:09:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26112 states, 25729 states have (on average 1.3861012864860662) internal successors, (35663), 25735 states have internal predecessors, (35663), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:09:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26112 states to 26112 states and 36095 transitions. [2021-11-07 02:09:15,853 INFO L78 Accepts]: Start accepts. Automaton has 26112 states and 36095 transitions. Word has length 138 [2021-11-07 02:09:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:15,853 INFO L470 AbstractCegarLoop]: Abstraction has 26112 states and 36095 transitions. [2021-11-07 02:09:15,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 26112 states and 36095 transitions. [2021-11-07 02:09:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 02:09:15,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:15,865 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:09:15,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:16,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-07 02:09:16,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:16,291 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:09:16,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1507889878, now seen corresponding path program 1 times [2021-11-07 02:09:16,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:16,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874915705] [2021-11-07 02:09:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:16,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:16,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:16,299 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:16,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 02:09:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:25,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 3598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:25,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:09:27,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:09:29,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:29,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874915705] [2021-11-07 02:09:29,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874915705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:29,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [805662003] [2021-11-07 02:09:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:29,437 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:29,441 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:29,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 02:09:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:34,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 3598 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:34,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:09:35,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:09:36,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [805662003] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:36,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:36,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:09:36,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764653778] [2021-11-07 02:09:36,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:36,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:36,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:09:36,119 INFO L87 Difference]: Start difference. First operand 26112 states and 36095 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:37,496 INFO L93 Difference]: Finished difference Result 52132 states and 72094 transitions. [2021-11-07 02:09:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-07 02:09:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:37,545 INFO L225 Difference]: With dead ends: 52132 [2021-11-07 02:09:37,545 INFO L226 Difference]: Without dead ends: 26120 [2021-11-07 02:09:37,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:09:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26120 states. [2021-11-07 02:09:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26120 to 26120. [2021-11-07 02:09:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26120 states, 25737 states have (on average 1.3859812720985352) internal successors, (35671), 25743 states have internal predecessors, (35671), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:09:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26120 states to 26120 states and 36103 transitions. [2021-11-07 02:09:38,729 INFO L78 Accepts]: Start accepts. Automaton has 26120 states and 36103 transitions. Word has length 141 [2021-11-07 02:09:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:38,730 INFO L470 AbstractCegarLoop]: Abstraction has 26120 states and 36103 transitions. [2021-11-07 02:09:38,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 26120 states and 36103 transitions. [2021-11-07 02:09:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 02:09:38,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:38,745 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:09:38,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:39,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:39,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:39,172 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:09:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:39,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1988970136, now seen corresponding path program 1 times [2021-11-07 02:09:39,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:39,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469114877] [2021-11-07 02:09:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:39,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:39,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:39,183 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:39,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-07 02:09:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:48,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 3600 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:48,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:09:50,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:09:52,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:52,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469114877] [2021-11-07 02:09:52,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469114877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:52,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433338512] [2021-11-07 02:09:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:52,421 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:52,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:52,422 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:52,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-07 02:09:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:57,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 3600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:57,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:09:58,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:09:58,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [433338512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:58,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:58,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 02:09:58,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571258007] [2021-11-07 02:09:58,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:58,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:58,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:58,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:58,758 INFO L87 Difference]: Start difference. First operand 26120 states and 36103 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:00,251 INFO L93 Difference]: Finished difference Result 52280 states and 72330 transitions. [2021-11-07 02:10:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-07 02:10:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:00,344 INFO L225 Difference]: With dead ends: 52280 [2021-11-07 02:10:00,344 INFO L226 Difference]: Without dead ends: 26260 [2021-11-07 02:10:00,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:10:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26260 states. [2021-11-07 02:10:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26260 to 26148. [2021-11-07 02:10:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26148 states, 25765 states have (on average 1.3855618086551524) internal successors, (35699), 25771 states have internal predecessors, (35699), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:10:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 36131 transitions. [2021-11-07 02:10:01,582 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 36131 transitions. Word has length 141 [2021-11-07 02:10:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:01,583 INFO L470 AbstractCegarLoop]: Abstraction has 26148 states and 36131 transitions. [2021-11-07 02:10:01,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 36131 transitions. [2021-11-07 02:10:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 02:10:01,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:01,595 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:10:01,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:01,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:02,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:02,023 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:10:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash -68122859, now seen corresponding path program 1 times [2021-11-07 02:10:02,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:02,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71531750] [2021-11-07 02:10:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:02,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:02,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:02,031 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:02,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-07 02:10:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:11,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:10:11,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:10:13,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:10:15,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:15,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71531750] [2021-11-07 02:10:15,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71531750] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:15,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391983342] [2021-11-07 02:10:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:15,388 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:15,401 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:15,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-07 02:10:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:20,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:10:20,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:10:22,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:10:23,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391983342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:23,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:10:23,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 02:10:23,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914708198] [2021-11-07 02:10:23,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:10:23,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:10:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:10:23,965 INFO L87 Difference]: Start difference. First operand 26148 states and 36131 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:28,313 INFO L93 Difference]: Finished difference Result 52279 states and 72270 transitions. [2021-11-07 02:10:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:28,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-07 02:10:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:28,387 INFO L225 Difference]: With dead ends: 52279 [2021-11-07 02:10:28,387 INFO L226 Difference]: Without dead ends: 26226 [2021-11-07 02:10:28,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:10:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26226 states. [2021-11-07 02:10:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26226 to 26148. [2021-11-07 02:10:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26148 states, 25765 states have (on average 1.3854841839705025) internal successors, (35697), 25771 states have internal predecessors, (35697), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:10:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 36129 transitions. [2021-11-07 02:10:29,562 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 36129 transitions. Word has length 142 [2021-11-07 02:10:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:29,562 INFO L470 AbstractCegarLoop]: Abstraction has 26148 states and 36129 transitions. [2021-11-07 02:10:29,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 36129 transitions. [2021-11-07 02:10:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 02:10:29,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:29,577 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:10:29,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:29,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-07 02:10:29,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:29,978 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:10:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1283262359, now seen corresponding path program 1 times [2021-11-07 02:10:29,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:29,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698767836] [2021-11-07 02:10:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:29,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:29,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:29,986 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:29,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-07 02:10:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:39,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:10:39,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:10:41,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:10:43,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:43,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698767836] [2021-11-07 02:10:43,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698767836] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:43,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [121179809] [2021-11-07 02:10:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:43,794 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:43,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:43,794 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-07 02:10:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:49,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:10:49,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:10:52,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:10:54,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [121179809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:54,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:10:54,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 02:10:54,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830784000] [2021-11-07 02:10:54,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:10:54,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:10:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:10:54,686 INFO L87 Difference]: Start difference. First operand 26148 states and 36129 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:03,618 INFO L93 Difference]: Finished difference Result 67190 states and 93646 transitions. [2021-11-07 02:11:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:11:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-07 02:11:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:03,696 INFO L225 Difference]: With dead ends: 67190 [2021-11-07 02:11:03,696 INFO L226 Difference]: Without dead ends: 41122 [2021-11-07 02:11:03,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2021-11-07 02:11:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41122 states. [2021-11-07 02:11:04,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41122 to 26148. [2021-11-07 02:11:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26148 states, 25765 states have (on average 1.3854065592858529) internal successors, (35695), 25771 states have internal predecessors, (35695), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:11:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 36127 transitions. [2021-11-07 02:11:05,169 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 36127 transitions. Word has length 142 [2021-11-07 02:11:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:05,170 INFO L470 AbstractCegarLoop]: Abstraction has 26148 states and 36127 transitions. [2021-11-07 02:11:05,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 36127 transitions. [2021-11-07 02:11:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 02:11:05,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:05,185 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:11:05,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:05,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:05,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:05,600 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:11:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2006537423, now seen corresponding path program 1 times [2021-11-07 02:11:05,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:05,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049443475] [2021-11-07 02:11:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:05,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:05,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:05,608 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:05,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-07 02:11:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:15,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 3639 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:11:15,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:11:17,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:11:19,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:19,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049443475] [2021-11-07 02:11:19,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049443475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:11:19,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2125548919] [2021-11-07 02:11:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:19,507 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:19,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:11:19,508 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:11:19,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-07 02:11:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:25,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 3639 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:11:25,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:11:27,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:11:29,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2125548919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:29,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:11:29,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5, 5] total 14 [2021-11-07 02:11:29,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018233977] [2021-11-07 02:11:29,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:11:29,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:11:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:11:29,009 INFO L87 Difference]: Start difference. First operand 26148 states and 36127 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:32,407 INFO L93 Difference]: Finished difference Result 66850 states and 92952 transitions. [2021-11-07 02:11:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:11:32,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-07 02:11:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:32,478 INFO L225 Difference]: With dead ends: 66850 [2021-11-07 02:11:32,479 INFO L226 Difference]: Without dead ends: 40802 [2021-11-07 02:11:32,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:11:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40802 states. [2021-11-07 02:11:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40802 to 26188. [2021-11-07 02:11:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26188 states, 25805 states have (on average 1.3848091455144351) internal successors, (35735), 25811 states have internal predecessors, (35735), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:11:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26188 states to 26188 states and 36167 transitions. [2021-11-07 02:11:34,086 INFO L78 Accepts]: Start accepts. Automaton has 26188 states and 36167 transitions. Word has length 148 [2021-11-07 02:11:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:34,087 INFO L470 AbstractCegarLoop]: Abstraction has 26188 states and 36167 transitions. [2021-11-07 02:11:34,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 26188 states and 36167 transitions. [2021-11-07 02:11:34,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 02:11:34,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:34,099 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:11:34,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:34,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:34,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:34,500 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ##fun~$Pointer$~TO~C_INTErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:11:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:34,501 INFO L85 PathProgramCache]: Analyzing trace with hash 779200982, now seen corresponding path program 1 times [2021-11-07 02:11:34,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:34,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578558676] [2021-11-07 02:11:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:34,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:34,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:34,508 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:34,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-07 02:11:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:44,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:11:44,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:11:46,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:11:48,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:48,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578558676] [2021-11-07 02:11:48,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578558676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:11:48,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [6139533] [2021-11-07 02:11:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:48,683 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:11:48,684 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:11:48,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-07 02:11:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:54,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:11:54,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:11:55,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:11:55,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [6139533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:55,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:11:55,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:11:55,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445763941] [2021-11-07 02:11:55,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:11:55,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:11:55,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:11:55,771 INFO L87 Difference]: Start difference. First operand 26188 states and 36167 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:56,925 INFO L93 Difference]: Finished difference Result 26258 states and 36237 transitions. [2021-11-07 02:11:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:11:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-07 02:11:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:56,986 INFO L225 Difference]: With dead ends: 26258 [2021-11-07 02:11:56,986 INFO L226 Difference]: Without dead ends: 26254 [2021-11-07 02:11:56,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:11:57,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26254 states. [2021-11-07 02:11:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26254 to 26184. [2021-11-07 02:11:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26184 states, 25803 states have (on average 1.3837538270743712) internal successors, (35705), 25807 states have internal predecessors, (35705), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:11:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26184 states to 26184 states and 36137 transitions. [2021-11-07 02:11:58,383 INFO L78 Accepts]: Start accepts. Automaton has 26184 states and 36137 transitions. Word has length 149 [2021-11-07 02:11:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:58,384 INFO L470 AbstractCegarLoop]: Abstraction has 26184 states and 36137 transitions. [2021-11-07 02:11:58,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 26184 states and 36137 transitions. [2021-11-07 02:11:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 02:11:58,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:58,396 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-07 02:11:58,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:58,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2021-11-07 02:11:58,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:58,797 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting hso_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:11:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash 737393127, now seen corresponding path program 1 times [2021-11-07 02:11:58,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:58,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173005795] [2021-11-07 02:11:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:58,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:58,808 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:58,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-07 02:12:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:08,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:08,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:12:10,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:12:12,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:12,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173005795] [2021-11-07 02:12:12,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173005795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:12:12,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1869996755] [2021-11-07 02:12:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:12,954 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:12:12,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:12:12,956 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:12:12,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-11-07 02:12:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:25,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:25,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:12:27,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 02:12:28,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1869996755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:12:28,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470481769] [2021-11-07 02:12:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:28,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:12:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:12:28,803 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:12:28,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 02:12:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:12:36,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:12:37,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:12:39,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470481769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:39,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:12:39,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 14 [2021-11-07 02:12:39,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570159001] [2021-11-07 02:12:39,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:12:39,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:12:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:12:39,047 INFO L87 Difference]: Start difference. First operand 26184 states and 36137 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:48,493 INFO L93 Difference]: Finished difference Result 77088 states and 106584 transitions. [2021-11-07 02:12:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 02:12:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-07 02:12:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:48,597 INFO L225 Difference]: With dead ends: 77088 [2021-11-07 02:12:48,597 INFO L226 Difference]: Without dead ends: 51004 [2021-11-07 02:12:48,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 933 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-11-07 02:12:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51004 states. [2021-11-07 02:12:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51004 to 26240. [2021-11-07 02:12:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26240 states, 25859 states have (on average 1.3829227735024556) internal successors, (35761), 25863 states have internal predecessors, (35761), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:12:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26240 states to 26240 states and 36193 transitions. [2021-11-07 02:12:50,510 INFO L78 Accepts]: Start accepts. Automaton has 26240 states and 36193 transitions. Word has length 158 [2021-11-07 02:12:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:50,511 INFO L470 AbstractCegarLoop]: Abstraction has 26240 states and 36193 transitions. [2021-11-07 02:12:50,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26240 states and 36193 transitions. [2021-11-07 02:12:50,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 02:12:50,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:50,521 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2021-11-07 02:12:50,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:50,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:51,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:51,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:51,122 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting hso_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:12:51,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash -357455675, now seen corresponding path program 1 times [2021-11-07 02:12:51,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:51,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174483792] [2021-11-07 02:12:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:51,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:51,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:51,151 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:51,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-07 02:13:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:02,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:13:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 02:13:04,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 02:13:07,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:07,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174483792] [2021-11-07 02:13:07,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174483792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:13:07,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1973686520] [2021-11-07 02:13:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:07,252 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:13:07,253 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:13:07,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-07 02:13:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:14,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:13:14,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 02:13:15,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 02:13:16,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1973686520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:16,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:13:16,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:13:16,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280941595] [2021-11-07 02:13:16,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:13:16,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:13:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:13:16,327 INFO L87 Difference]: Start difference. First operand 26240 states and 36193 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:18,112 INFO L93 Difference]: Finished difference Result 55033 states and 76123 transitions. [2021-11-07 02:13:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:13:18,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-07 02:13:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:18,168 INFO L225 Difference]: With dead ends: 55033 [2021-11-07 02:13:18,168 INFO L226 Difference]: Without dead ends: 28893 [2021-11-07 02:13:18,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:13:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28893 states. [2021-11-07 02:13:19,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28893 to 26232. [2021-11-07 02:13:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26232 states, 25851 states have (on average 1.3827318092143437) internal successors, (35745), 25855 states have internal predecessors, (35745), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:13:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26232 states to 26232 states and 36177 transitions. [2021-11-07 02:13:19,925 INFO L78 Accepts]: Start accepts. Automaton has 26232 states and 36177 transitions. Word has length 164 [2021-11-07 02:13:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:19,926 INFO L470 AbstractCegarLoop]: Abstraction has 26232 states and 36177 transitions. [2021-11-07 02:13:19,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 26232 states and 36177 transitions. [2021-11-07 02:13:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 02:13:19,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:19,936 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2021-11-07 02:13:19,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:20,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-11-07 02:13:20,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:13:20,338 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting hso_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:13:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1437455255, now seen corresponding path program 1 times [2021-11-07 02:13:20,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:20,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190899767] [2021-11-07 02:13:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:20,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:20,345 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:20,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-07 02:13:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:31,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:13:31,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 02:13:33,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 02:13:36,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:36,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190899767] [2021-11-07 02:13:36,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190899767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:13:36,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [21359094] [2021-11-07 02:13:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:36,099 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:13:36,104 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:13:36,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2021-11-07 02:13:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:42,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:13:42,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 02:13:45,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 02:13:48,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [21359094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:48,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:13:48,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:13:48,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170296741] [2021-11-07 02:13:48,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:13:48,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:13:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:13:48,399 INFO L87 Difference]: Start difference. First operand 26232 states and 36177 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:50,139 INFO L93 Difference]: Finished difference Result 52364 states and 72242 transitions. [2021-11-07 02:13:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:13:50,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-07 02:13:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:50,214 INFO L225 Difference]: With dead ends: 52364 [2021-11-07 02:13:50,215 INFO L226 Difference]: Without dead ends: 26232 [2021-11-07 02:13:50,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:13:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26232 states. [2021-11-07 02:13:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26232 to 26232. [2021-11-07 02:13:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26232 states, 25851 states have (on average 1.3821128776449654) internal successors, (35729), 25855 states have internal predecessors, (35729), 202 states have call successors, (202), 174 states have call predecessors, (202), 174 states have return successors, (230), 202 states have call predecessors, (230), 202 states have call successors, (230) [2021-11-07 02:13:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26232 states to 26232 states and 36161 transitions. [2021-11-07 02:13:52,819 INFO L78 Accepts]: Start accepts. Automaton has 26232 states and 36161 transitions. Word has length 165 [2021-11-07 02:13:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:52,819 INFO L470 AbstractCegarLoop]: Abstraction has 26232 states and 36161 transitions. [2021-11-07 02:13:52,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 26232 states and 36161 transitions. [2021-11-07 02:13:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 02:13:52,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:52,834 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2021-11-07 02:13:52,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2021-11-07 02:13:53,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:53,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:13:53,236 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting hso_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 02:13:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash -902983451, now seen corresponding path program 1 times [2021-11-07 02:13:53,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:53,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342703705] [2021-11-07 02:13:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:53,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:53,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:53,264 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:53,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c640055-e0f7-43f3-8b4e-602935c8eca4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process