./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH --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 f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:44:10,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:44:10,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:44:10,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:44:10,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:44:10,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:44:10,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:44:10,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:44:10,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:44:10,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:44:10,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:44:10,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:44:10,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:44:10,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:44:10,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:44:10,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:44:10,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:44:10,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:44:10,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:44:10,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:44:10,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:44:10,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:44:10,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:44:10,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:44:10,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:44:10,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:44:10,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:44:10,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:44:10,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:44:10,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:44:10,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:44:10,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:44:10,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:44:10,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:44:10,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:44:10,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:44:10,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:44:10,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:44:10,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:44:10,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:44:10,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:44:10,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:44:10,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:44:10,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:44:10,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:44:10,800 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:44:10,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:44:10,800 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:44:10,801 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:44:10,801 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:44:10,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:44:10,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:44:10,802 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:44:10,802 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:44:10,802 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:44:10,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:44:10,803 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:44:10,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:44:10,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:44:10,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:44:10,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:44:10,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:44:10,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:44:10,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:44:10,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:44:10,806 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:44:10,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:44:10,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:44:10,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:44:10,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:10,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:44:10,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:44:10,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:44:10,808 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:44:10,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:44:10,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:44:10,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:44:10,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:44:10,810 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2021-11-03 04:44:11,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:44:11,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:44:11,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:44:11,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:44:11,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:44:11,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-11-03 04:44:11,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/fb79f5678/db23dbdd7cb84d6a869734cfce5b6b45/FLAG6a0379bf5 [2021-11-03 04:44:12,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:44:12,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-11-03 04:44:12,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/fb79f5678/db23dbdd7cb84d6a869734cfce5b6b45/FLAG6a0379bf5 [2021-11-03 04:44:13,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/fb79f5678/db23dbdd7cb84d6a869734cfce5b6b45 [2021-11-03 04:44:13,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:44:13,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:44:13,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:13,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:44:13,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:44:13,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:13" (1/1) ... [2021-11-03 04:44:13,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53449f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:13, skipping insertion in model container [2021-11-03 04:44:13,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:13" (1/1) ... [2021-11-03 04:44:13,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:44:13,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:15,535 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:15,646 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:15,658 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:15,668 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:15,687 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:15,984 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,168 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,170 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,183 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,184 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,186 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,187 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,192 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,196 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,202 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,203 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,205 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,329 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,338 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,345 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,348 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,373 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,386 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,386 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,387 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,395 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,397 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,420 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,421 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,422 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,465 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,466 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,466 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,467 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,468 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,479 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,485 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,486 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,487 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,494 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,495 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,501 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,511 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,512 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,513 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,522 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,523 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,527 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,530 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,535 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,590 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,592 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,647 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:16,658 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,104 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,124 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,124 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,166 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,176 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,205 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,240 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,289 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,368 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,369 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,369 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,370 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,370 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,373 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,373 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,848 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,849 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,858 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,874 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,884 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,894 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,918 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,933 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,940 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,964 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,965 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,978 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,979 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:17,984 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:18,018 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:18,020 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:18,022 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:18,023 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:18,026 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:18,039 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-11-03 04:44:18,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:18,202 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) [2021-11-03 04:44:18,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ccdf104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:18, skipping insertion in model container [2021-11-03 04:44:18,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:18,206 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:44:18,209 INFO L168 Benchmark]: Toolchain (without parser) took 4934.31 ms. Allocated memory was 121.6 MB in the beginning and 178.3 MB in the end (delta: 56.6 MB). Free memory was 90.6 MB in the beginning and 103.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:44:18,210 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 121.6 MB. Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 144.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:44:18,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4923.19 ms. Allocated memory was 121.6 MB in the beginning and 178.3 MB in the end (delta: 56.6 MB). Free memory was 90.6 MB in the beginning and 103.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:44:18,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 121.6 MB. Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 144.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4923.19 ms. Allocated memory was 121.6 MB in the beginning and 178.3 MB in the end (delta: 56.6 MB). Free memory was 90.6 MB in the beginning and 103.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6959]: 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH --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 f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:44:21,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:44:21,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:44:21,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:44:21,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:44:21,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:44:21,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:44:21,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:44:21,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:44:21,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:44:21,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:44:21,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:44:21,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:44:21,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:44:21,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:44:21,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:44:21,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:44:21,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:44:21,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:44:21,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:44:21,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:44:21,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:44:21,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:44:21,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:44:21,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:44:21,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:44:21,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:44:21,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:44:21,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:44:21,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:44:21,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:44:21,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:44:21,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:44:21,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:44:21,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:44:21,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:44:21,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:44:21,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:44:21,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:44:21,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:44:21,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:44:21,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:44:21,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:44:21,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:44:21,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:44:21,466 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:44:21,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:44:21,467 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:44:21,468 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:44:21,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:44:21,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:44:21,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:44:21,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:44:21,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:44:21,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:44:21,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:44:21,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:44:21,473 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:44:21,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:44:21,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:44:21,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:44:21,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:44:21,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:44:21,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:44:21,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:44:21,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:21,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:44:21,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:44:21,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:44:21,477 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:44:21,477 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:44:21,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:44:21,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:44:21,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:44:21,478 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2021-11-03 04:44:22,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:44:22,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:44:22,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:44:22,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:44:22,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:44:22,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-11-03 04:44:22,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/8d365712b/1ecc4590a32a4681b8e6e044f362c97c/FLAG70c81c0af [2021-11-03 04:44:23,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:44:23,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-11-03 04:44:23,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/8d365712b/1ecc4590a32a4681b8e6e044f362c97c/FLAG70c81c0af [2021-11-03 04:44:23,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/data/8d365712b/1ecc4590a32a4681b8e6e044f362c97c [2021-11-03 04:44:23,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:44:23,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:44:23,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:23,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:44:23,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:44:23,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:23" (1/1) ... [2021-11-03 04:44:23,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62963810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:23, skipping insertion in model container [2021-11-03 04:44:23,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:23" (1/1) ... [2021-11-03 04:44:23,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:44:24,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:28,919 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-11-03 04:44:29,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:29,091 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:44:29,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:29,883 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-11-03 04:44:29,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:29,949 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:44:31,195 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_1020fd70-bba0-48b8-979e-bce5d05d38e0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-11-03 04:44:31,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:31,530 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:44:31,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31 WrapperNode [2021-11-03 04:44:31,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:31,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:44:31,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:44:31,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:44:31,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:31,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:33,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:44:33,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:44:33,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:44:33,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:44:33,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:33,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:33,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:33,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:35,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:35,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:35,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:35,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:44:35,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:44:35,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:44:35,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:44:35,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (1/1) ... [2021-11-03 04:44:35,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:44:36,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:44:36,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:44:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-03 04:44:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:44:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 04:44:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:44:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:44:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:44:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:44:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:44:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:44:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:44:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:44:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:44:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:44:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:44:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:44:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:44:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:44:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:44:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:44:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:44:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:44:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:44:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:44:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:44:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:44:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:44:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:44:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:44:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:44:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:51:36,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:51:36,226 INFO L299 CfgBuilder]: Removed 8575 assume(true) statements. [2021-11-03 04:51:36,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:51:36 BoogieIcfgContainer [2021-11-03 04:51:36,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:51:36,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:51:36,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:51:36,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:51:36,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:44:23" (1/3) ... [2021-11-03 04:51:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:51:36, skipping insertion in model container [2021-11-03 04:51:36,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:31" (2/3) ... [2021-11-03 04:51:36,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:51:36, skipping insertion in model container [2021-11-03 04:51:36,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:51:36" (3/3) ... [2021-11-03 04:51:36,246 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-11-03 04:51:36,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:51:36,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-03 04:51:36,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:51:36,360 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 [2021-11-03 04:51:36,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-03 04:51:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 8154 states, 8138 states have (on average 1.343450479233227) internal successors, (10933), 8153 states have internal predecessors, (10933), 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) [2021-11-03 04:51:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:51:36,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:36,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:36,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:51:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1393914949, now seen corresponding path program 1 times [2021-11-03 04:51:36,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:36,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737309869] [2021-11-03 04:51:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:36,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:36,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:36,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:36,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:51:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:44,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:51:44,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:44,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:44,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:44,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737309869] [2021-11-03 04:51:44,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737309869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:44,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:44,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:51:44,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486311516] [2021-11-03 04:51:44,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:51:44,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:51:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:44,947 INFO L87 Difference]: Start difference. First operand has 8154 states, 8138 states have (on average 1.343450479233227) internal successors, (10933), 8153 states have internal predecessors, (10933), 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) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-11-03 04:51:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:46,160 INFO L93 Difference]: Finished difference Result 24436 states and 32774 transitions. [2021-11-03 04:51:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:51:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2021-11-03 04:51:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:46,302 INFO L225 Difference]: With dead ends: 24436 [2021-11-03 04:51:46,303 INFO L226 Difference]: Without dead ends: 16039 [2021-11-03 04:51:46,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16039 states. [2021-11-03 04:51:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16039 to 16011. [2021-11-03 04:51:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16011 states, 15996 states have (on average 1.2846961740435108) internal successors, (20550), 16010 states have internal predecessors, (20550), 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) [2021-11-03 04:51:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16011 states to 16011 states and 20550 transitions. [2021-11-03 04:51:47,266 INFO L78 Accepts]: Start accepts. Automaton has 16011 states and 20550 transitions. Word has length 17 [2021-11-03 04:51:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:47,267 INFO L470 AbstractCegarLoop]: Abstraction has 16011 states and 20550 transitions. [2021-11-03 04:51:47,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-11-03 04:51:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16011 states and 20550 transitions. [2021-11-03 04:51:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:51:47,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:47,283 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, 1, 1, 1] [2021-11-03 04:51:47,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:47,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:47,484 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:51:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1538739172, now seen corresponding path program 1 times [2021-11-03 04:51:47,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:47,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949150168] [2021-11-03 04:51:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:47,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:47,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:47,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:47,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:51:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:55,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:51:55,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:55,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:56,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:56,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949150168] [2021-11-03 04:51:56,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949150168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:56,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:56,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:51:56,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884452079] [2021-11-03 04:51:56,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:51:56,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:56,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:51:56,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:56,192 INFO L87 Difference]: Start difference. First operand 16011 states and 20550 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-03 04:51:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:57,711 INFO L93 Difference]: Finished difference Result 32865 states and 42270 transitions. [2021-11-03 04:51:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:51:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 [2021-11-03 04:51:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:57,830 INFO L225 Difference]: With dead ends: 32865 [2021-11-03 04:51:57,830 INFO L226 Difference]: Without dead ends: 16857 [2021-11-03 04:51:57,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2021-11-03 04:51:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16817. [2021-11-03 04:51:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16817 states, 16802 states have (on average 1.2902035471967623) internal successors, (21678), 16816 states have internal predecessors, (21678), 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) [2021-11-03 04:51:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 21678 transitions. [2021-11-03 04:51:58,534 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 21678 transitions. Word has length 42 [2021-11-03 04:51:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:58,535 INFO L470 AbstractCegarLoop]: Abstraction has 16817 states and 21678 transitions. [2021-11-03 04:51:58,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-03 04:51:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 21678 transitions. [2021-11-03 04:51:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 04:51:58,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:58,545 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, 1] [2021-11-03 04:51:58,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:58,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:58,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:51:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1876995584, now seen corresponding path program 1 times [2021-11-03 04:51:58,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:58,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532567061] [2021-11-03 04:51:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:58,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:58,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:58,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:52:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:07,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:52:07,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:08,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:09,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:09,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532567061] [2021-11-03 04:52:09,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532567061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:09,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:09,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:52:09,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455517138] [2021-11-03 04:52:09,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:52:09,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:52:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:52:09,149 INFO L87 Difference]: Start difference. First operand 16817 states and 21678 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-03 04:52:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:14,642 INFO L93 Difference]: Finished difference Result 33651 states and 43378 transitions. [2021-11-03 04:52:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:52:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 72 [2021-11-03 04:52:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:14,706 INFO L225 Difference]: With dead ends: 33651 [2021-11-03 04:52:14,706 INFO L226 Difference]: Without dead ends: 16829 [2021-11-03 04:52:14,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:52:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16829 states. [2021-11-03 04:52:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16829 to 16756. [2021-11-03 04:52:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16756 states, 16741 states have (on average 1.2901260378710948) internal successors, (21598), 16755 states have internal predecessors, (21598), 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) [2021-11-03 04:52:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16756 states to 16756 states and 21598 transitions. [2021-11-03 04:52:15,570 INFO L78 Accepts]: Start accepts. Automaton has 16756 states and 21598 transitions. Word has length 72 [2021-11-03 04:52:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:15,570 INFO L470 AbstractCegarLoop]: Abstraction has 16756 states and 21598 transitions. [2021-11-03 04:52:15,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-03 04:52:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 16756 states and 21598 transitions. [2021-11-03 04:52:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:52:15,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:15,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:15,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:15,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:15,782 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:52:15,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash 866752574, now seen corresponding path program 1 times [2021-11-03 04:52:15,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:15,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591367105] [2021-11-03 04:52:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:15,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:15,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:15,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:15,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:52:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:23,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:52:23,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:24,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:25,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:25,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591367105] [2021-11-03 04:52:25,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591367105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:25,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:25,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:52:25,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285123260] [2021-11-03 04:52:25,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:52:25,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:52:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:52:25,437 INFO L87 Difference]: Start difference. First operand 16756 states and 21598 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-03 04:52:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:26,057 INFO L93 Difference]: Finished difference Result 33509 states and 43193 transitions. [2021-11-03 04:52:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:52:26,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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 81 [2021-11-03 04:52:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:26,105 INFO L225 Difference]: With dead ends: 33509 [2021-11-03 04:52:26,105 INFO L226 Difference]: Without dead ends: 16756 [2021-11-03 04:52:26,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:52:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16756 states. [2021-11-03 04:52:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16756 to 16756. [2021-11-03 04:52:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16756 states, 16741 states have (on average 1.2900065706947017) internal successors, (21596), 16755 states have internal predecessors, (21596), 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) [2021-11-03 04:52:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16756 states to 16756 states and 21596 transitions. [2021-11-03 04:52:26,759 INFO L78 Accepts]: Start accepts. Automaton has 16756 states and 21596 transitions. Word has length 81 [2021-11-03 04:52:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:26,762 INFO L470 AbstractCegarLoop]: Abstraction has 16756 states and 21596 transitions. [2021-11-03 04:52:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-03 04:52:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 16756 states and 21596 transitions. [2021-11-03 04:52:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:52:26,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:26,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:26,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:26,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:26,988 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:52:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:26,988 INFO L85 PathProgramCache]: Analyzing trace with hash 134785148, now seen corresponding path program 1 times [2021-11-03 04:52:26,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:26,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293725641] [2021-11-03 04:52:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:26,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:26,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:27,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:52:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:34,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:52:34,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:35,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:35,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:35,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293725641] [2021-11-03 04:52:35,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293725641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:35,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:35,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:52:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681138794] [2021-11-03 04:52:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:52:35,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:52:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:52:35,918 INFO L87 Difference]: Start difference. First operand 16756 states and 21596 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-11-03 04:52:39,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:39,259 INFO L93 Difference]: Finished difference Result 33524 states and 43202 transitions. [2021-11-03 04:52:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:52:39,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2021-11-03 04:52:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:39,297 INFO L225 Difference]: With dead ends: 33524 [2021-11-03 04:52:39,297 INFO L226 Difference]: Without dead ends: 16768 [2021-11-03 04:52:39,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:52:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2021-11-03 04:52:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16755. [2021-11-03 04:52:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16755 states, 16740 states have (on average 1.2899641577060932) internal successors, (21594), 16754 states have internal predecessors, (21594), 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) [2021-11-03 04:52:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16755 states to 16755 states and 21594 transitions. [2021-11-03 04:52:39,991 INFO L78 Accepts]: Start accepts. Automaton has 16755 states and 21594 transitions. Word has length 81 [2021-11-03 04:52:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:39,992 INFO L470 AbstractCegarLoop]: Abstraction has 16755 states and 21594 transitions. [2021-11-03 04:52:39,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-11-03 04:52:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 16755 states and 21594 transitions. [2021-11-03 04:52:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 04:52:39,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:39,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:40,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:40,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:40,199 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:52:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1865175788, now seen corresponding path program 1 times [2021-11-03 04:52:40,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:40,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589460355] [2021-11-03 04:52:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:40,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:40,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:40,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:52:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:48,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:52:48,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:48,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:49,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:49,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589460355] [2021-11-03 04:52:49,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589460355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:49,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:49,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 04:52:49,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402564382] [2021-11-03 04:52:49,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:52:49,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:49,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:52:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:52:49,958 INFO L87 Difference]: Start difference. First operand 16755 states and 21594 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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) [2021-11-03 04:53:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:04,570 INFO L93 Difference]: Finished difference Result 115810 states and 148907 transitions. [2021-11-03 04:53:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:53:04,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 89 [2021-11-03 04:53:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:04,872 INFO L225 Difference]: With dead ends: 115810 [2021-11-03 04:53:04,873 INFO L226 Difference]: Without dead ends: 99058 [2021-11-03 04:53:04,953 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:53:05,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99058 states. [2021-11-03 04:53:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99058 to 16763. [2021-11-03 04:53:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16763 states, 16748 states have (on average 1.289825650823979) internal successors, (21602), 16762 states have internal predecessors, (21602), 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) [2021-11-03 04:53:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16763 states to 16763 states and 21602 transitions. [2021-11-03 04:53:06,846 INFO L78 Accepts]: Start accepts. Automaton has 16763 states and 21602 transitions. Word has length 89 [2021-11-03 04:53:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:06,847 INFO L470 AbstractCegarLoop]: Abstraction has 16763 states and 21602 transitions. [2021-11-03 04:53:06,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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) [2021-11-03 04:53:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16763 states and 21602 transitions. [2021-11-03 04:53:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 04:53:06,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:06,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:06,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:07,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:07,072 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:53:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 538839512, now seen corresponding path program 1 times [2021-11-03 04:53:07,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:07,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870135371] [2021-11-03 04:53:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:07,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:07,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:53:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:14,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:53:14,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:53:14,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:53:15,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:15,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870135371] [2021-11-03 04:53:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870135371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:15,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:15,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:15,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557926768] [2021-11-03 04:53:15,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:53:15,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:15,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:53:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:53:15,243 INFO L87 Difference]: Start difference. First operand 16763 states and 21602 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-11-03 04:53:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:18,993 INFO L93 Difference]: Finished difference Result 33575 states and 43305 transitions. [2021-11-03 04:53:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:53:18,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 91 [2021-11-03 04:53:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:19,021 INFO L225 Difference]: With dead ends: 33575 [2021-11-03 04:53:19,021 INFO L226 Difference]: Without dead ends: 16815 [2021-11-03 04:53:19,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:53:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2021-11-03 04:53:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16815. [2021-11-03 04:53:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16815 states, 16800 states have (on average 1.2889285714285714) internal successors, (21654), 16814 states have internal predecessors, (21654), 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) [2021-11-03 04:53:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16815 states to 16815 states and 21654 transitions. [2021-11-03 04:53:20,127 INFO L78 Accepts]: Start accepts. Automaton has 16815 states and 21654 transitions. Word has length 91 [2021-11-03 04:53:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 16815 states and 21654 transitions. [2021-11-03 04:53:20,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-11-03 04:53:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 16815 states and 21654 transitions. [2021-11-03 04:53:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 04:53:20,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:20,134 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:53:20,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:20,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:20,360 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:53:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash 246008344, now seen corresponding path program 1 times [2021-11-03 04:53:20,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:20,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549936934] [2021-11-03 04:53:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:20,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:20,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:20,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:53:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:28,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:53:28,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:53:29,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:53:30,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:30,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549936934] [2021-11-03 04:53:30,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549936934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:53:30,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [652175045] [2021-11-03 04:53:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:30,171 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:53:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:53:30,173 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:53:30,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 04:53:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:33,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:53:33,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:53:33,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:53:34,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [652175045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:34,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:53:34,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:53:34,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579916010] [2021-11-03 04:53:34,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:53:34,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:53:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:53:34,439 INFO L87 Difference]: Start difference. First operand 16815 states and 21654 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-11-03 04:53:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:38,507 INFO L93 Difference]: Finished difference Result 35487 states and 45851 transitions. [2021-11-03 04:53:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:53:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 93 [2021-11-03 04:53:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:38,537 INFO L225 Difference]: With dead ends: 35487 [2021-11-03 04:53:38,537 INFO L226 Difference]: Without dead ends: 18675 [2021-11-03 04:53:38,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:53:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18675 states. [2021-11-03 04:53:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18675 to 18451. [2021-11-03 04:53:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18451 states, 18436 states have (on average 1.297895422000434) internal successors, (23928), 18450 states have internal predecessors, (23928), 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) [2021-11-03 04:53:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18451 states to 18451 states and 23928 transitions. [2021-11-03 04:53:39,756 INFO L78 Accepts]: Start accepts. Automaton has 18451 states and 23928 transitions. Word has length 93 [2021-11-03 04:53:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:39,757 INFO L470 AbstractCegarLoop]: Abstraction has 18451 states and 23928 transitions. [2021-11-03 04:53:39,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-11-03 04:53:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18451 states and 23928 transitions. [2021-11-03 04:53:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 04:53:39,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:39,763 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:53:39,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:40,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-03 04:53:40,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:53:40,184 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-03 04:53:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1418791558, now seen corresponding path program 1 times [2021-11-03 04:53:40,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:40,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964985735] [2021-11-03 04:53:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:40,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:40,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:40,190 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:40,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:53:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:48,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:53:48,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:53:48,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:53:49,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:49,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964985735] [2021-11-03 04:53:49,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964985735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:53:49,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [411412711] [2021-11-03 04:53:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:49,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:53:49,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:53:49,632 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:53:49,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1020fd70-bba0-48b8-979e-bce5d05d38e0/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 04:53:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:52,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:53:52,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:53:53,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:53:54,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [411412711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:54,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:53:54,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [5, 5] total 19 [2021-11-03 04:53:54,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890391819] [2021-11-03 04:53:54,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:53:54,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:53:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:53:54,973 INFO L87 Difference]: Start difference. First operand 18451 states and 23928 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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)